Just in case anyone is using their account here to post to off-instance communities: those posts and comments seem to have a very high failure rate. There is a lot of activity and accounts on this instance. This is to raise awareness, not to pull people away or break up the lemmyverse. Quite the opposite really: there is a technical problem on this instance that might be preventing the lemmyverse from functioning as it should.
That is an issue for sure, but probably better addressed at the ActivityPub level? IMO, an instance should be limited to a single community.
Yes, this would be a change to the underlying protocol. I think it’s definitely worth discussing how this problem can be solved by people who maintain ActivityPub. IMHO the Lemmy and kbin developers should also be a part of these discussions as well.