I think it's pretty clear by now that it is turning men into autgypenphilic troons, pedos, and manchildren who believe that they're entitled to a harem of waifus despite being absolute losers.
Watching anime past the age of 12 is both a cause and a symptom of being a perma online autistic incel. And 95% is pure slop, regurgitated garbage with no value other than giving some quick dopamine hits (OMG this Stacy is interested in the loser MC!!, oh WOW the absolute loser MC got isekaid into some generic fantasy land!!). It's so generic it may as well be generated by AI.
Of course, Chuds not only become obsessed with cute (and often underage) cartoon girls who are extremely submissive and have no standards. Some of them end up wishing to BECOME ONE in order to escape from the reality of being an undesirable Chud, becoming autogynephilic or even trooning out