The pessimist in me says they don't want to acknowledge any venues that they can't later try to manipulate an algorithm to control who sees what
@Muddobbers @dangillmor I think it's simpler that that. It's not the owners behind this, it's the writers. The journalists do not get fellated and lionized here the way they do on the corporate social media sites. They do not get the immediate elevated status they have come to believe they deserve, just for publishing listicle round-ups of "here's what people are saying on twitter" and calling that writing. Here, they're just punters. So this does not exist.
It's just ego.
@jwz @Muddobbers @dangillmor I missed "The WELL", but recently I discovered that it marketed very heavily to journalists in the beginning, just like Twitter did.
I think it's just Twitter, Bluesky, etc. have very effective marketing; either by luck or by skill.
These things are about getting a critical mass of people participating, and money helps.