In this episode of #OnTheMedia where a senior Mastodon community member says basically that they limited things that caused virality because they thought that was one of the worst things about Twitter, and then kinda shrugs when he says something like "Of course, that means that Mastodon couldn't have supported social movements like #MeToo or #BlackLivesMatter." He also concedes that Black Twitter folk have been made to feel unwelcome, but ... eh.
https://www.wnycstudios.org/podcasts/otm/episodes/on-the-media-mastodon-may-take-twitters-weary