Right with you on this. I got a BA in psychology nearly ten years ago and since then I've done a lot of personal therapy as well as researching complex ptsd, neurodivergence, polyvagal theory and working in social services for at least six. This shit is dangerous, I feel like it can be a very convenient way to escape culpability, to think in black and white instead of engaging in nuance, and can keep people emotionally immature. It can also be very weaponized and potentially uses to gaslight people which is in and of itself really traumatizing.
That being said I think "trigger" and "gaslight" are some words that people do not understand at all, and it feels like it devalues a person's experience whose gone through trauma. Someone on a subreddit was talking about their mom gaslighting them because mom denied that OP was autistic. I gently mentioned that that situation was not gaslighting; it was belittling, sure, but it was a disagreement which is VERY different from someone constructing an elaborate, long game psychological manipulation in order to make you question your own reality. A bunch of people jumped down my throat for that, but like, that's dangerous because that kinda implies that their mom is abusive, when from that context that's not who she is. Black and white thinking.