I recently asked a question about the accuracy of the popular origin story of a myth, but it has been flagged as a duplicate of the question that asks if the myth itself is true. The user who raised the flag has a track record of solid judgment (at least in my eyes, as a frequenter lurker), but I'm having difficulty understanding how my question is contained in the "original" question, other than that they are both related to the same myth.
Can anybody explain why my question would be considered a duplicate here on Skeptics (I know our standards for questions/answers are different than many other SE sites), or point me in the direction of a suitable meta post?
As a general rule of thumb, should questions about the origin of a myth be relegated to the question about the myth itself, rather than asked as a separate question?
This answer from 5 years ago might be a good starting point for the discussion, but doesn't address this particular question: Should Skeptics SE questions include the origin of claims?