Mi sento come se avessi fatto una scoperta sensazionale:

https://lwn.net/Articles/918224/

>To users of other ActivityPub software, each Lemmy community appears to be a user; posts and comments from Lemmy appear as notes that have been reposted by the community user. Users on other types of servers can follow Lemmy communities and participate in discussions by replying to existing posts and comments, but they may not be able to create new top-level posts of their own, unless the software that they’re using also supports the concept of discussion groups. Lemmy users can subscribe to communities on their own and other servers, but cannot follow individual accounts, although they can exchange direct messages with them.

La morale è che sì, da Mastodon si può leggere Lemmy, ma è borderline impraticabile, peccato (vedere ad es. @technology)