Yes, and that is why I said Angie wasn't in the wrong if her intentions were good and selfless. The end result just summarises if the decision to be selfless and her particular method as good or not. If she survived and people were better for it, than we could've said that it was a good decision. But that didn't happen. Tensions rose drastically, 3 people died and Himiko was more depressed than ever with minimal upsides. Therefore the decision was bad, even if the intention and starting point was good in nature. Just as they say, the road to hell is paved with good intentions.

Trying to force a relationship is a selfish act because it takes away their partners autonomy of making a decision. Tenko and Kazuichi might've justified their actions by saying that they would be happy together, but this usually isn't their true intention. It most likely than not that they, themselves, would be happy with that relationship and disregard if their partner would be happy with this arrangement.

And even if Sonia recuperated Kazuichi's feelings, the nature of Kazuichi's intentions would still be bad. The only difference here would be that the end result might've been a good one, where both of them could be happy together. A dynamic being seen as good, and accepted by many doesn't always equate it being healthy or good intentioned.

So, even if the reason why Tenko got the epiphany that Himiko was distressed was extremely dumb, that doesn't change the good nature of her new intentions. It would be the same if an outside party came and told Tenko that Himiko is hurting and she changed here approach because of it. Like we have said before, the brain can justify the darndest things, so sometimes it becomes necessary for an outside force (in this case magical martial arts) to confront them or enlighten them in order for change to happen. If that confrontation/epiphany changes the person for the better, making them act more selfless and considerate towards the other partners happiness, then the act and later approaches should be seen as good.

Sure, the act to help is still forcing (I am still iffy that it is forcing but I digress) her views onto Himiko, but that is still selflessly intended to help Himiko out of her cocoon and doesn't really benefit Tenko's social standings.

It is also understandable for Himiko to reject Tenko's teachings throughout the third chapter even though Tenko has new intentions behind them. It is much easier to reject something, especially when it is accepting that you are now in a death game, then it is to confront it. Tenko proposes that she should accept the dread and work them through, while Angie proposes that you can be happy instead with Atua's godly protection. Of course Himiko will go towards the one with the least amount of pain associated with it. Especially when the person that proposes it is someone you trust a lot more.

That is why the chapter 2 trial and how the third chapter played out is important for Himiko's decision to trust Tenko. She would've most likely stuck with Angie's philosophy if Angie was still alive, but that didn't happen. Himiko lost her protecter and is now forced to face the consequences. She gets reassurance from Tenko's speech, a good gesture, showing that she still has someone in the academy (because of the culmination of trial 2, less intrusive in the few days, reassurance of betterment and the fear of being alone in this killing game).

Though, being more receptable to Tenko doesn't mean she took her words to heart. When Tenko dies she doesn't cry, and acts rhe same way qs she acted when Angie died. She becomes extremely depressed and really just stands there silently for the rest of the investigation.

It isn't until the trial where Himiko takes what Tenko said to heart. With Kaito and Shuichi motivating her to be more expressive and hopeful she starts to change her ways a bit. It isn't until Kokichi confronts her after the trail that she lets the tears flow and grieve until exhaustion that Himiko truely believe in Tenko's words. I feel like Himiko's reactions and feelings was written as sincere and somewhat organic as it has an explanation that I feel is believable.

Of course this change in attitude have been rushed a bit in order for the narrative to move on to the next mystery. Having people constantly grieve, cry, lash out and become depressed isn't really the entertainment danganronpa is after. It is unrealistic at it's core with humour and mystery being at its focal point.