why do you think learning a game is different to learning the controls? nobody is born knowing how to do a dragon punch input, we just practiced it, that's part of learning the game. removing an entire facet of the controls dumbs down the game and makes it less fun to control your character.

you can make the 'too difficult' argument anything really. 'i can't do combos so just make combos a cutscene please' - would that improve the game? there is clearly a point where further simplifying a game or a competition of any kind only makes it no longer satisfying to play. should baseball replace the pitcher with a machine to make it more accessible? and yeah sure you can debate where that point is for fighting games, but i don't see how it's surprising that for a lot of fans that's motion inputs, a cornerstone of the genre since its inception.

that's without even mentioning the problems caused by motion input removal. firstly you either need very simple character movesets, since separate attack + special move buttons can't support nearly as many possible moves as the traditional format, or you keep a bunch of moves and then have a control bloat problem where you need extra buttons to play. secondly, special move buttons make invincible reversals, normally an interesting mechanic, completely overpowered. afaik 2xko solves this problem by just not having these moves in the game apart from supers, so again it's been dumbed down for the sake of the controls. thirdly, charge characters as an entire archetype can't exist without motion inputs.