Mastodon (and others a la twitter) is actor-centric, where focus is on people.
Lemmy (and others a la reddit) is topic-centric, where focus is on common interests.
These two are very different approaches that I can hardly see mixing well. I thought of “microblogs” of mbin as a “nice to have” but unnecessary functionality. Did it actually lift off?
Started to argue with myself: if the concepts of following people and topics did not mix well, how could fb reach a couple bilion users? I myself silently hope for Bonfire to succeed, even after seeing Friendica, Hubzilla and almost forgotten Diaspora. Maybe it just wasnt done rght in FOSS so far?