Lemmy's interop with the microblogging portion of the Fediverse (which is by far the largest part) sucks. You can't follow users, so there's no way to pull in content from there and there's no hashtag support built in for posts, so Lemmy posts don't get to take advantage of the discoverability features on the microblogging side. Beehaw in particular is picky with whom they federate, but it shouldn't matter since there's plenty of microblogging instances that share their ethos. I was already a Mastodon user for a few years prior to any of the exoduses and it bummed me out that you guys didn't get to experience Fedi in its full glory because of these limitations. Hopefully the next platform that Beehaw migrates to will be better about this.