I asked someone on bluesky i follow what is mastodon lacking that they ultimately chose bluesky, and they said something along the lines “basic ease of use. The way it works is probably perfectly sensible to fediverse people, but I had an awful time there”

They do indeed have (abandoned) mastodon account with posts, so they did try. I don’t know what they meant by it lacking basic ease of use, and I didn’t feel entitled to ask stranger for more explanation. But it wasn’t picking instance, since they already had an account on one of them.

The only thing I personally noticed is off is following people on other instances if you’re not looking at them via your instance website Identity not being perfectly transferrable on mastodon. You can post a special “follow me there instead” post, but what if your instance went tyrant and wouldn’t let you post it? Or just went offline? I think cryptographic identity would be more robust for that, but it would also mean user having to store private key somewhere, which would be even less user-friendly