Gregory's Server
Some may not have much of a choice. If you depend on social media to spread word about your content as company/creator, and you're not into streaming or videos, then you're basically doomed to go with Zuckerberg, Google, and Elmo in the West for high reach.
That's also why many stick with Elmo's site and don't move over to Mastodon for example. They don't have any way to advertise their products/services here.