although BSV is a shitcoin but the reason why you can't use early versions has nothing to do with that. don't let hv_ nonsense fool you. look at the code. the "refactoring" is completely meaningless. for example it has enabled useless OP codes such as OP_MULTIPLY that you won't even see in any meaningful transactions anyways.
the reason why you can't use early versions (as i explained before) is because everything meaningful is changed. for starters every single BSV signature you create today is going to be invalid in early versions. why? because BSV is hashing transactions based on SegWit rules which didn't even exist before 2017.