I hate to say it but vote after reading the complete answer.
This tagging thing is tricky. Deletion of all the tags is not required. This is why....
There are some tags on the site for different types of scriptures like puranas, smriti , dharma-shastras and for all scriptures a broader scripture.
There is no proper guidance available for this tag (many tags) except saying that it is only for smriti or Dharma shastra.
Tag excerpt for smriti
For the questions about Smriti (Sanskrit:स्मृति) (literally "which is remembered") scriptures. These texts are usually attributed to an author and produced out of human intellect.
Tag excerpt for Dharam shastra
Dharmaśāstra (Sanskrit: धर्मशास्त्र) is a genre of Sanskrit texts, and refers to the treatises (shastras) of Hinduism on dharma.
Now, smritis are the texts which are remembered. Texts like Dharma shastras viz Manu smriti, Atri Smriti etc., come under this category. So, it can be said that smritis are same as Dharma shastras.
There is another notion that Puranas, some sutra texts like Brahma sutras etc., are also smritis because they are remembered and written. Even if they are smritis, usage of smriti for puranas and brahma-sutras is unnecessary and redundant for puranas and brahma sutras because they already an established and specific tags. They are more popular than the smriti tag. So, smriti for puranas is also redundant
Now, there comes a broader tag scripture
There is already a discussion which got a good response in the past. Are we correctly tagging "scripture" tag?
Scripture tag is used for almost each and every question which do not discuss about scriptures in the question at all. It is being tagged if there is a single word "scripture" wherever in the body or the title of the question. This is mainly used for the scriptural reference of something. But there is identification-request for identifying a verse or an image which you know but not the exact location. I agree that almost each and every question is asking for scriptural reference. For that, Adding a line "Scriptural reference needed" in the body with bold or italics is enough. If there is more specific tag like vedas or ramayana, tag is redundant. This should be only used when the question is about a scripture or a text in the body like if the question is about a Purana, a commentary by someone based on some work etc., . So, that we can be more specific with the tags for which they were intended.
The 5 tag limit which many are concerned:
There is no need of adding 5 tags for each and every questions. 3 or 4 are enough. There have been many instances in network wide where the questions with a single tag have received great answers and got more than thousand views in a short time. It depends on the content of the question. If the question is poor and clear and still five tags are present, it won't help. Repeating the same tag is unnecessary.
Tagging based on answers:
This is the definition of tag.
Tag is a keyword or label that categorizes your question with other similar questions. Using the right tags makes it easier for others to find and answer your question.
Tags should be added based on what question describes. They should not be added if the answer is from a certain text. e.g if a question is about an incident of Ravana from Bhagavata Purana, the question should be tagged with ravana and also bhagavata-purana. It is not good to tag the question with ramayana because he is the main antagonist of Ramayana. If a user comes to that question to find about Ramayana and finds some other thing, he will be disappointed and this is not a right way to tag. Hence, we should be precise with tagging.
Only exception to this rule is where the OP is 100% sure about the presence of answer and there is no other way of answering. Then it is okay to tag question with which is based on answers. But, as Hinduism is a vast religion and there are hundreds of paths and philosophies prescribed for the same destination. There have been many interpretations and understanding of the same thing in many different ways. e.g: There have been ≥ 33 commentaries on the Brahma sutras and each of them differ in some or the other way. When we talk about Bhagavad Gita, there are many understandings and observations and each of it changes from person to person.
As a site, we are neutral to every faith and belief. We don't chose one path as correct and other as wrong. It is users who have opinions which is right and which is not. We should not force that opinion as the only correct. So, tagging that specific answer as the right one and tagging with what is present in the answer might be suitable for programming sites like S[OFU] but not a good idea for a religious site like us.
Scriptures are not the only valid sources
Many sources besides direct scriptures are allowed. Scriptural sources are preferred. Some times, scriptural works are not applicable for answering. We have to search for other sources and those explain or answer the question in detail than the scripture itself. We need more analysis than the direct copy paste from direct scriptures. Philosophical questions do not need direct source either. They can be explained by other non scriptural sources too.
Other sources which cite a valid reference than the direct scriptural quote should also be encouraged. Many users think that scriptures re the only valid sources and demanded for that. A user who posted an answer with valid references but not scripture deleted their answer. Scriptural quotes are a user's choice and they are not mandatory. They enhance the quality of the answer. Any valid reference which explains the answer well are allowed. They need not to be a scripture.
Conclusion: There are four possible ways to remove ambiguity of these tags.
One of the tags Dharma shastras or smritis can be removed or merged. Smriti is more popular word than dharma shastras. So, smriti can be retained.
Dharma shastras are same as Smritis and all the shastras are the subset of scriptures.
Usage of scripture should be limited to questions which discuss about a tag and ask about scriptures itself rather than a general tag and scriptural references.
References questions should be tagged with more specific tags. If the question is asking from Vedas or Puranas, those can be used instead of scripture. All the questions should not be tagged with scripture. Other specific tags should be encouraged.