Relevant: https://www.lesswrong.com/posts/Kbm6QnJv9dgWsPHQP/schelling-...
Sure it is.
The point of the fallacy is that an argument should stand on its own merit, and has nothing to do with the person making it. Guess what - experts can be wrong too (e.g. hand washing).
Perhaps you could explain the difference?
The authority fallacy is that a certain position cannot be challenged as some expert are infallible. Similarly to how you believe 2 + 2 = 4 you also believe Aristotle was the arbiter of truth. As an argument it exposes no attack surface because you do not admit criticisms of the position.
It is not a fallacy if you are simply making an assumption of a fact (eg that rats are born out of rotting plants) that can be separately proven or disproven.
Sort of how a dictionary is used, it is not that the dictionary must be true we understand that it is possible for it to be wrong, it is just that we agree not to contest it in most cases for ease of conversation.