How is Bluesky easier to use when it’s literally also federated? And you can just create an account on any Mastodon instance like mastodon.world or mastodon.social and start using it.
It may be easier because Bluesky already made the choice for you, you don’t need to pick an instance, the default is Bluesky Social and that’s it, if you want a different one you can search it or make one. It removes that tiny mental block of having to commit to a server you don’t know if you will like.
That’s inaccurate and reductive. ATproto and ActivityPub do not federate the same way, and how they work greatly affects how users interact with the entire ecosystem.
On Mastodon, pick the wrong instance and there’s content you’ll never see, migration isn’t complete, discovery is so bad they started a new initiative to try fixing it, instances have their own cultures, and so on.
Bluesky has issues, some I’d consider critical, but they’re not directly user-facing for the most part. Make an account, you get the same experience as everyone else.
edit: Sorry, I have this issue where I try to be concise, yet feel like I end up being rude. I get your confusion, but they’re quite different. Hopefully this helped; I can elaborate if you want.