One use case: get posts from sports commentary that are on Bluesky and cross-post them to relevant communities. Half of reddit's NBA posts is just someone taking tweets from NBA reporters and posting there for discussion. With the bluesky integration, I could see this being done very easily.

That's fair. The R-site does not have any ATProto clone yet, is that correct? Lemmy is still mostly a ghost town for non-techie discussion. As I understand it, Bluesky is already a moderately successful replacement for Twitter. My general point is that we cannot afford a 3-way struggle between corporate social media, ATProto and the fediverse (i.e. ActivityPub). There just isn't enough attention to go round.