While I don't agree with supabase not being useful, I agree that their getStarted documentation could use some work.

I've faced many issues with the twitter auth. For example, you need to enable accessing email via an additional option on twitter developer dashboard for it to work with supabase. It wasn't documented. I've faced bugs which appeared and disappeared between upgrading supabase instance (You can have different instance version if you created a new application in the middle of beta).

The real time doesn't work until you enable the sync on the supabase dashboard which was not apparent to me. There are bunch of oddities with how policies and realtime work.

The CLI has gone through multiple confusing iteration.

I would still recommend supabase to anyone though. Solid despite rough edges.