DISCLAIMER: this is not an invitation to start debating these subjects, these are just crudely picked examples.
I'm sure most are aware but your description about eugenics is a bit off. It seems like you are putting a positive slant on it or suggesting thats the goal, whether intentional or not. Eugenics is about denying a class of humans (however you classify that class) from the ability to reproduce. This is highly unethical and given our tendency to classify on race, usually associated with racist agendas (such as the Nazis). I had to look up Wrongthink but it seems to be a term the Alt-Right is introducing... possible a play on thoughtcrime and newspeak (both Orwell) to defend their controversial opinions [0].
0: https://www.thetimes.co.uk/article/alt-right-has-a-word-for-...
The incredible (heh) thing about this is that My Hero Academia answers it. In the world of MHA, nearly everyone has a superpower, or Quirk, of some sort; but superheroes are still a distinct class of professionals who have honed their quirks through training and, in general, developed courage, self-sacrifice, and inner resolve way beyond even the average superhuman. The greatest heroes distinguish themselves by exemplifying these values the most (though having powerful awesome Quirks helps). It was the perfect thing to come along at a point of maximum capeshit saturation.
He's a total arse don't get me wrong, but baseline humanity using nothing but its wits and hard work to make 'heroes' who inherited their powers obsolete is a sentiment I don't imagine is too alien to the readers of HN.
He's a villain because he's trying to replace the hereditary caste by violence, and by consuming them. The tension is there outside of him -- and Mr. Incredible is a bit of an arse to Billy at first -- but it's his means, not his ends, that are the problem.
We see this at the start of the film where Mr Incredible and his friend get tangled up in a rescue operation in a burning building despite having been pretty firmly rejected by baseline humans they're attempting to help, if I remember right one of them literally gets frozen alive by Mr Incredible's friend as they escape which is rather violent. We also see it when he throws his insufferable boss through several walls in a fit of anger, which is a display of his ingrained violent nature and lack of control over his superhuman powers which presents a threat to innocent bystanders. It's might-makes-right with a veneer of heroic respectability over the top, their true nature is very different from the nature they present to the public.
Either that or I'm reading way too much into a film that's mostly aimed at kids!
The anime Mob Psycho 100 goes into this idea heavily and its really great.