I disagree with this point of view and I think you're misrepresenting the other side's argument. The question isn't whether or not there should be things in the game requiring practice, it's whether or not the things the game asks of you to practice in order to competently play it are necessary and improve the overall experience. If, at a high level, people are able to consistently get out reversals when the situation calls for it then why is it necessary to gate off that aspect of the game to the mid or low level players? Does knowing the specific 2 frame reversal window make you "better" than the person you're facing? Do we want the fighting games we play to emphasize things like arbitrarily gating off simple parts of the experience (Reversals or FRCs in the older games) or do we want them to emphasize the actual act of playing and reacting to another human opponent?
I gotta agree with this. Fighting games already have a ridiculously high skill gap between new and experienced players which is why we rarely see new people pick up fighting games, doing things like low frame window reversals just extends that even more when the whole point is to make it accessible. In tournaments, they wll find a way to get the reversals 100% of the time or near it or find a way around it (e.g. plinking)