I mean, most of the communities are on .world, and if they're not federating with .world, they're just not going to show up in the majority of comment sections.
But also, HB is much more of a communal space than most of the big instances, and much more aligned on how they engage with off-site content. And as the fediverse grows horizontally, a significant part of it probably going to be through focused instances, rather than more general purpose sites. We have those covered already, and most of the people interested in something like that aren't going to leave Reddit anytime soon.
They have what they want.
This means there will be more "we don't want to host this kind of content" discussions over time, not fewer. The fediverse will look more patchwork, not less.
They shot themselves in the foot by trying to topple the government early and now by telling everyone that Trump's coming for our health care.
They can't read the room worth a damn, and have lost all ability to tap into what people are feeling. So, they're collapsing