Reposted because spoiler tags are hard apparently:

I really hate the fake choice whether to trust Kyoko or not.

That's fair, I tolerate this more than I like it. The best justification that I've come up with is 'well, it isn't the first time that Makoto has not told Kyoko something without the player having any influence, and it has to do with the trust narrative between the two of them.' But I still think it was rather poorly done, especially since Makoto had been talking to Kyoko about the importance of trusting people and all that. It just doesn't seem very realistic for him to not at least say something like 'I'm sorry, I need to figure some things out first before I tell you.'

How it portrays Byakuya, Toko and Yasuhiro as evil for keeping distance from someone who had been betraying them all along. Byakuya was kind of cunt to say nasty stuff, and Yasuhiro deserves shit for smashing the bottles, but other than that they did something completely reasonable. Hina threw a hissy-fit because Togami and co were unwilling to forgive a traitor.

I didn't get the impression that either side was being portrayed as right or wrong. Sakura was the traitor, but it's also clear she was being blackmailed and didn't follow the mastermind's orders in the end. From Hina's perspective, that is enough that it shouldn't be a problem. But Byakuya, Yasuhiro and Toko are justifiably wary of her, and it brings Hina into this defensive mindset that they hate Sakura and by extension everyone does. If anyone is portrayed as being in the right, I'd say it's Sakura, not Hina.

It is doubly stupid when you realize that this mastermind is supposed to be the Ultimate Analyst, THE most busted intellectual Ultimate talent.

There's another reason for me to dislike the Ultimate Analyst thing. But again, fair. It is rather dumb by the mastermind's standards even from THH's perspective.

The bit with Byakuya at the trial made no sense IMO. The guy is not a bastion of emotional intelligence, but he does know how his actions make people feel. That whole bit where he can't wrap his brain around Hina actions was nonsencical. The "bourgeois can't understand the proles feelings" trope is done to death.

I half-agree with you on this, I guess? It's another one of these times where the idea is more important than the execution to me. That is, while Byakuya was certainly emotionally intelligent enough, I also did get the sense that he had a blind spot due to his confidence and dismissive attitude. What stands out to me is less the actual argument (which, truth be told, I wouldn't expect to be that much of an issue for Byakuya) and more what he takes from it. Which is not that 'feelings matter' (which I would've disliked, as I hate those kind of redemption arcs), but rather that he has that blind spot - hence the 'don't get me wrong, I'm not saying this out of some misplaced sense of sentamentalism' on both his and Kyoko's parts. If I had to say, I think that's what made the moment work for me.

Also Byakuya literally says something like "Don't ask me for an apology again, I have already forgiven you"

I had to go back and check, but what he says is "I haven't reached a point where I need someone apologizing to me more than once." Which, granted, is not that big of a difference, but to me it does change the tone since there's no explicit forgiveness. It's more 'you've apologized to me once so apologizing again isn't going to change anything, let's just move on.' You could also take it as well as the 'misplaced sentamentalism' line as just Byakuya being a tsundere, but I thought there was a little more to it than that.

and Makoto says something like "Hina is not our enemy, you are!"

This is true, though, regardless of whether or not the others entirely forgive Hina for what she tried to do. Though Hina's actions were not in any way justified, it's clear that they were caused by the group's current situation and the solution lies in getting out of there.

It feels like the game is screaming at my ear that I should forgive her, which makes me feel like the game is denying the validity of my feelings towards her, which made me dig in my heels and just hate her more.

I think this is the most important part. I never even considered how this chapter could come across as saying 'how could you even think Hina is wrong for doing what she did you monster'. I did feel Hina was in the wrong, but I felt satisfied with the way the game addressed those feelings. But also given your feelings on Kyoko, your resentment of Hina in this chapter was probably much stronger than mine, which would probably make those moments like where Makoto or Yasuhiro says 'I don't blame her! Nobody blames her!' hit very wrong and sour the experience. That's a perspective I hadn't thought of.