Oddbean new post about login | logout That's a big if. 10x as many failure points as legacy social media. Also, this is what the outbox model solves. You should always be able to find your follows if their relay lists are properly set up.
How does this work exactly? Are relays synchronizing your notes with the relays that your followers use?
No, you publish a kind 10002 with a list of relays you read or write from. If someone wants to mention you, they publish to your read relays; if someone wants to read your notes they read from your write relays. This means even if you're banned from the top 10 relays, your self-hosted relay still is accessible. People only need to know that you write to it. That information can be suppressed on the top 10 relays, but those events are easier to replicate and can be more easily identified as suppressed.
Is there any way to know that users are prohibited from relay?
There are a few ways that have been partially adopted, including error messages when publishing or sending requests, NOTICE messages, etc. But not a lot of clients (coracle included) surface much of this information.