The Reddit-like structure of Lemmy, Mbin and I guess Piefed* make them kind of the Alaska of the Fediverse; they’re not really connected to the rest of it. The other platforms without the community structures interoperate; you can comment on a Peertube video from a Pixelfed account…but that doesn’t work with Lemmy and I’m not convinced I’ve ever interacted with Mbin.
*I just can’t keep up with all the meaningless names I’m expected to remember. Hell I can’t do it for people. “You know who Jim Flinnigan is?” “No I don’t.” “He’s the freshman state congressman from Wisconsin who’s proposing the controversial pecan legislation.” “Oh the nut bill guy. What about him?” -1/4th of every conversation with my father, because Jim Flinnigan could be a work buddy of his, someone somewhere in Hollywood in the last 90 years, or the Wisconsin nut bill guy. “You know who Flinn Jimmigan is, right?” “No I don’t.” “He was Edith Head’s optometrist in the 60’s.” On top of that, there’s hardware manufacturers, the trade names for their products, commercial software apps, open source apps, a new javascript framework comes out three times a leap second…
Wait, was that the nut bill guy or eye doctor to the costume designer to the stars?