I feel like the tsundere trope is a very unhealthy trope, and not just because of the times when the characters would physically hurt their partner, but also because if you describe someone as a tsundere, I think it's just a way to say that you will ignore or downplay every negative emotion that they have. Unhappy face? No, he's not really unhappy. A fucking panic attack? no, it doesn't mean anything, they are a tsundere. Fuck this.
You might say that there are exceptions, but I think that it all promotes the same idea. I don't think it should even be an argument to say that a character is unhappy when their face is unhappy, but somehow, this has changed. I think that this is completely disgusting.
If you're playing a game with your friends and you lose and you get mad, you might rage quite a bit, and you probably won't break your friendship. But that doesn't mean that you weren't mad. That's what the people who use the tsundere trope seem to suggest. I think that the tsundere trope's base is about ignoring other people's negative emotions.
I think that the tsundere trope is a scam and a fetish, and if you use it in your life, you will fail. I think that the tsundere trope is evidence that using and believing in certain parts of Japanese culture can be harmful and that the worst offenders should be banned. Another example is Nagatoro, which is about bullying and teasing. I hate this, because I don't think that neither teasing nor bullying are good at all. You might say that people who watch it are smart enough to not repeat what they see, but when you make an anime and orient it towards teenagers or children, they will likely believe it. If you handle something in a bad way, then even if your intentions were good it all goes to shit.
After careful reflection, I believe that Anime and manga represents only a tiny part of Japanese culture and should not be promoted over actually listening to Japanese people when talking about learning Japanese. It's good to appreciate other cultures, but it's also good to realise that sometimes, what you see is clearly full of shit and cannot be defended by the culture, but is also a minority.