I suspect this is unlikely to take off with Fediverse enthusiasts unless they open source it, or at least have some way people can self-host it and make a micro blogiverse.
It looks like they had plans to do that at one point. Unclear whether they still plan to do it. Tumblr and blogging honestly seem like the most natural fit for federation. More natural even than Twitter or Reddit. It'd be great to see them do that.