u/TheBronyCynic

Or not so hot take since I have no idea what the consensus on this is. I found My Hero Academia's worldbuilding to be one of the weakest aspects of the series and the main reason is Horikoshi has a tendency to introduce ideas and only partially fleshing them out or barely fleshing them out.

Notable examples:

The Creature Rejection Clan - Not even sure what Hori was trying to do. It feels like they were meant to play a bigger role, but those ideas had to be cut due to editorials. As it stands the CRC are just fodder a complete nothing faction. They come and go as soon as they are introduced. Which is a shame because it could have great in universe commentary about Heteromorph discrimination if they operated like DC's Court of Owls. (Ex: Members being in law enforcement and parliament).

Heteromorph discrimination - An element of the story that's introduced way too late needed a much more stable foundation. Before this the most we saw is some slight jabs some characters being heteromorphs such Bakugo calling Mina "raccoon eyes", the wolf dude commenting about Shoji hides his face and Shigi calling Spinner a lizard. Accidental discrimination is still discrimination mind you, but these examples aren't really signs of broader discrimination such as being denied employment and educational opportunities, scapegoating, being grouped together terrorist and violent criminals, prohibited from playing sports with non-heteromorphs and hate crimes and them not being taken seriously...okay MHA does mention this part, but it is only told to us by one of Midnight's killers by namedropping some Star Wars references (The 6-6 incident, the Jeda Purge). It really makes Shoji's arc feel weak and hollow.

80% having quirks and 20% being quirkless - Are we just supposed to believe that quirkless normal humans are okay with being a shrinking minority? Humarise could have been a good reflection of this had a lot their members weren't using quirks including their leader. And their stances are more ideological rather than preservation. Imagine if we got a group like Humarise that focused more on the fact that their population was dwindling rather than a doomsday theory that was coined by someone working with All For One. And of course, like the Creature Rejection Clan, their influence on the story begins and ends with one appearance. A little off topic, but I like to imagine an AU where Overhaul resented the things he was doing to Eri but felt it was the only way to keep the normal human from going the way of the Neanderthal.

The Hero Public Safety Commission - I really like the concept of this. A shady organization doing morally questionable things to enforce the status quo. It's the resolution I'm not a fan of. All the victims of this organization aside from Twice are all faceless and nebulous. According to the wiki the people they went after were villains who were plotting extreme terrorists and the moment their actions were called into is when Lady Nagant is tasked with making 2 corrupt heroes disappear, so Nagant instead kills the president believing he was corrupt. (Which somehow jumps to her wanting to destroy Hero society as a whole.) And for we all know that's what Hawks is gonna keep doing same thing that the HPSC has always been doing with some slight improvements. It never plays around with the idea that the word 'terrorist' is often used for a whole range suspects from actual terrorists to people who have an ideology that doesn't align with the state's. Nagant has every right being skeptical of joining them even with different leadership because Hawks has shown he's willing to use duplicitous means to achieve his and the Safety Commission's goals. In a way they kind of won in the end.

Oji Harima - What was even the point of this guy and why does the show treat Mr Compress being his great great grandson as some big reveal? The anime makes him out to this great villain, but his actions don't reflect that. He was just a Robin Hood figure.

Minor examples:

The Quirk Singularity Theory - This one is really up in the air as to whether it's true or not considering it was coined by the doctor who worked with All For One and the strongest example is Shigiraki using a quirk that AFO gave to him. But it's the fact it's never really bought up again after AFO's defeat not even as something the HPSC will take precaution over.

Tournament festival - Ignoring UA likely wouldn't be able to keep its doors due to numerous litigation suits let alone hold a tournament. Let's assume they find a way they get around that. I find it most hard that there would be no opposition to what are essentially gladiator-style fights with teenagers for the entertainment of adults. Not even protests outside the stadium.

Horikoshi does excel with character moments which is enough to (somewhat) make up for the weak worldbuilding.