The problem with Lemmy is that every instance seems to treat itself as an insular fiefdom that bans dissenters. It’s the same problem scaled up. Instances can cross-post in theory, but often people seem to treat the domain as a tribal affiliation, and mods may block subs or even entire domains based on petty disagreements.

I think Nostr solves this problem; individual relays may block certain accounts, but there’s no tribal signifier for preemptive blocking, and you can still get data from blocked accounts by using other relays. It would be very hard to get all relays to collaborate to fully block an account (and in any case you could spin up your own relay if this happened).

The “Satellite” client used to have a Reddit-like presentation, although they seem to have converted back to a Twitter-like feed—not sure why, perhaps it wasn’t a popular format. (The protocol is capable of Reddit-like communities.) I guess “Stacker News” is the current champion for Reddit-ish clients, although it’s more akin to HN or maybe Tildes. It’s a shame that it’s so crypto-focused.