It's good to remember that things end up on HN because random people post them here, not because their original authors want them here. HN is not, as a rule, good at keeping this in mind, and tends to treat anything that lands on HN as if it was part of a discussion they are (1) a part of and (2) welcome to participate directly in.

I think it's in fact super healthy for people to set clear boundaries about how they engage with this place, and "this Twitter thread was not posted as a solicitation for an HN thread, or for HN people to jump onto my TL" is a very sane boundary indeed.

That people read this kind of boundary drawing as "hatred" is itself a good illustration of the issue!