Interesting dilemma, Thinking about moving to #ds106 https://social.ds106.us. It seems moving mastodon servers is not that difficult. I think you lose old posts but since I’ve POSSED some from my blog it is not a problem. Alternatively the ActivityPub WordPress plugin turns your blog into a member of the fediverse. The is attractive, but I am not sure how much understanding & work is needed. Or I could stay on mastodon.social