That’s provably not universally true, although I have no idea about the exact demographics.
Best I’ve ever seen was some online discussions about motives, but I never compiled any statistics out of random anecdotes (that must be biased and probably not representative).
That's a gross exaggeration. Some people just want to play the game, but lack motor skills commensurate with their other abilities.
Are players who take advantage of developer-supplied aim assist and other assistive technologies "motivated by a toxic sense of self regard and a desire to humiliate others"?