Yes. It pulls people towards normality, since it gives the average words for every answer. Meanwhile social media encouraged people to be different enough to surface, and therefore encouraged abnormality.
It's a over-simplification, that's for sure, one bordering on incorrect. But for people who don't care about the internals, I don't think it's a harmful perspective to keep.
It's harmful because in this context it leads to an incorrect conclusion. There's no reason to believe that LLMs "averaging" behavior would cause a suicidal person to be "pulled toward normal"
It's a philosophical argument more than anything I think. And it does beg the question, does your mind form itself around with the humans (entities?) you converse with? So if you talk with a lot of smart people, you'll end up a bit smarter yourself, and if you talk with a lot of dull people, you'll end up dulling yourself. If you agree with that, I can see how someone would believe that LLMs would pull people closer to the material they were trained on.