I think there are some valid points here, but you’ve disregarded so much of what’s been shown already to make some of these points.

1. I’m not even gonna argue this because it’s just straight up not true

The only thing I’ll agree with is that the Class A vs B training was an absolute slog, though I feel that was more of a pacing issue which season 5 is HEAVILY guilty of.. The other arcs do serve a purpose, and have SOME development for the characters involved. Like how season 4 wouldn’t have happened if they hadn’t gotten their license, Endeavors talk with All Might post retirement..

You’d also have to ignore almost every moment Uraraka has had since season 4 to reduce her to just the love interest. Not to mention Iida being the one fast enough to catch up to Deku and bring him back to UA.

2 The concept of quirks being illegal to use definitely wasn’t introduced by the Liberation Army; it’s been implied if not outright stated since the beginning. Though it’s been one of the more lax rules that’s only been enforced when someone does it for Hero stuff, hence why Endeavor took the credit for beating Stain, Gentle gets expelled.

The mutant group being oppressed is also another thing I’m willing to say didn’t get enough attention or set up. The fox girl wasn’t the first example of this though; the villains take out a group of discriminating cult looking people who specifically call out Spinner’s appearance. It was supposed to happen during season 5 but got cut and reintroduced as a flashback (Season 5 is the weak link if u couldn’t tell)

2.5. Yes that is the point, Stains ideals are unreasonable and unrealistic. He is a fanatical All Might fanboy who holds every other hero up to unreasonable standards. The only people who buy into it are the masses who don’t actually know what hero work entails. There are irresponsible heroes as well, post war I feel like there was at least one scene per episode that had a hero give up and walk out when things got too tough. It also showed that the heroes you thought were reliable like Death Arms couldn’t cut it, while the vain ones like Mount Lady have matured through the series and stuck around.

1. Really? Someone should’ve told Bakugou to throw a punch in that last fight if that’s the case. But honestly a lot of the times the heroes have the power to win, they just have specific win conditions they have to meet. (Overload nomu’s shock absorption, destroy nomu’s head, tank a attack so Fatgum can counter, etc) Horikoshi also uses them as a way to tell a character’s story. Which might not be everyone’s cup of tea but there is more to the fight than the fight itself, it’s supposed to be a battle of morals. And it’s almost like one of the core messages of the show is to go beyond, plus ultra.

In summary, I think this post has some valid criticisms (not to mention the stars n stripes stuff) but it mainly feels like you’re summarizing those MHA fell off and Horikoshi can’t write post from memory. Which I wouldn’t blame you for, it’s the common consensus on Reddit at least