>>98388676now see, that's a problem of self insertion
kids can self insert into EVERYTHING because they have their lives ahead of them, adults want "adult shit" they can relate to because they want to feel like the characters were kids with amazing dreams that grew up to be boring worthless chumps doing dead end jobs or going to college and never really looking forward to effecting the world like them.
if it was about adults who actually have interesting, extremely dangerous and adventurous lives, like cops, special forces soldiers, disaster relief, spies, gangsters, smugglers, extremists and outlaws of all kinds, and so on, not only would it be controversial as fuck, most people wouldn't get it and it would be dense, bleak, gritty and not at all fit for animation unless you made frequent surreal breaks.