I can speak for myself, I got triggered, unexpectedly for myself, by watching the new evil endings. But I don't blame anyone, especially Larian. Or course I don't. I chose to watch them. I don't even blame myself, because I couldn't have known that these endings would have such an impact on me.
So imo, it's unavoidable that someone can get triggered the first time they see something new in this game. This game have +18 and other warnings for a reason.
But what really matters is to have an option not to see the same stuff again. Just like I have an option not to be evil in this game.