I think it is a category split. Both "free will" and "absolute determinism" are too polarized. Determinism with some degree of choice is a reasonable position, but it requires accepting determinism as the basis and dialing back free will from a religious definition to a functional one.
To me, it is clear that something exists and is consistent, so whether it is internal or external does not really matter.
I agree on the fence-sitting. How useless!
I think most people "argue for" what they want to believe is true, instead of paying attention to what is actual.