When I first started there, not a lot of prominent people were on there, but now with Musk’s shenanigans on Twitter there are a lot of big names moving there. All the big news services are posting there too. Government agencies are starting to post there.

King isn’t there yet but there is an account that reposts his Tweets there.

Also if you are in a tech field you are likely to find a lot of prominent people in your field there. I did and it’s actually a lot better for keeping up with my professional stuff than Twitter ever was. There’s a lot less clutter and things trying to advertise at me.