You can't even compare bluesky and fedi at this point. Last I checked bluesky isn't even federated, and will it ever be? Considering the financial hit of opening up your platform like that. I mean in practice it means anyone can build their own bluesky, with blackjack and hookers.

I really hope activitypub doesn't die out because people are choosing old centralized solutions again, have they learned nothing?

AP needs some help from government and news agencies. For example, you should be able to subscribe to news@nyt.com or alerts@usgs.gov. Any site can implement ActivityPub. It's not a twitter-clone until someone makes a twitter clone that is AP federated. So far it's just a fancy alternative to RSS.