Twitter is also great for announcements. Band you like puts out a new single or album? They’re touring? Twitter was great for that. I used it for that, books/authors, and a handful of other media that was similar where I was waiting for release dates. Mastodon and the others don’t seem to have drawn those entities to them so they aren’t as useful for those things. I don’t really know what can replace it if it doesn’t have the popularity.