There's an entire Mastodon instance devoted to linguistics at Polyglot City, and a Toki Pona PeerTube instance at seka pona la! Lemmy is only partially interoperable with most of the other Fediverse platforms, since their focuses are just so different. However, there's definitely a few ways to interact with them from here I think.
Also right here we've got communities for:
- !shavian@lemmy.world
- !languages@lemmy.world
- !linguistics_humor@sh.itjust.works
- !esperanto@sopuli.xyz
And actually lots more, this is just a sample.