@j12t@j12t.social pixelfed is broadly compatible with Mastodon, no? Unless of course the pixelfed account uploads more than 4 photos...
I'd say support for threadiverse platforms is mediocre at best.
@mastodonmigration@mastodon.online while this is a known workaround, I don't think it's a tenable long-term solution.
You can have "real decentralization" without the quirks, too.
@jonny@neuromatch.social sure! NodeBB has it working now if you want to poke around on BrowserPub, just paste a topic URL into it.
v4.0.0 can pull entire topics in already (assuming the remote end supports it.)
When v4.1 drops you'll be able to do this via the topic URL itself.