There is nothing wrong if the question is asking about mention in Hinduism. But the question didn't mean that initially. The OP was asking for scientific reasons.
According to our site's policy, Asking for scientific speculation is off-topic.
Political and Scientific questions are off-topic for Hinduism SE.
The main question you have linked i.e., Why is Chandra Grahan (Lunar eclipse) considered unsafe for pregnant women in Hinduism? was originally asking for scientific reasons in its body(You can check the revisions here). Hence it was closed. Later it was modified to fit the requirements of the site by the OP and other users.(Check the revisions here). But the users forgot to vote to reopen the post. Now, it has been reopened by one of the moderators.
The other question you have linked i.e., Why are women restricted from entering temples during menstruation?, is already closed as a duplicate of an existing question. Even scientific speculation is also valid but the users chose to vote as duplicate. It was not closed as a scientific speculation because it will work as a sign post.
Hope this helps.