Personally, I came to sh.itjustworks because when choosing a server the message was "these more popular servers aren't taking new people, go elsewhere."

It said that there would be no bigotry tolerated and I took that at face value and it generally aligned with what I was looking for otherwise and was accepting new users, so I signed up.

I can't speak for others.

Now how that's evolving (Agora, etc) so it's a work in progress and you're right, things aren't necessarily moving on a timeline that suits everyone (including me) because many people are not used to situations where we're having to figure it out as we go along, so here we are.