but I think the assumption that you’d centralize multiple AP services in a single app now feels entirely obsolete
It’s not that I want a single app, it’s that I want a single account with all my posts/data even though I’m using different apps. I don’t want to have to have so many duplicate follows across all the different fediverse apps.
But that still just creates a new Pixelfed account which trusts the Mastodon account identity, and it must be followed separatel from the Mastodon account. And you can’t enable the SSO between existing accounts, and there’s no account migration on Pixelfed.