Yes I agree with you but they should have been aware that it would be like this, I talked to my friend yesterday about these two options whether characters can evolve or not, it's quite confusing, because if they can evolve this violates what is in the reactive evolution blog which says "Its extent and complexity only go as far as its feats and scaling have gone for it"
But they should be able to evolve to that level, but this could also lead to nlf because we can think this character will evolve until it reaches the opponent's level or even infinite if there is no explicit limit on its abilities.
However, I think this depends on the potency of character because bigger potency can be stronger than layered hax