If you want to understand censorship then just think of it like an in person conversation:

• Me and you are talking... you are being a belligerent asshat and screaming at me. I walk away or shut the door so I don't have to listen to you anymore. [mute/block]

––– not censorship. I have no olbigation to listen to your bullshit.

• Me and you are talking... we want to have a conversation about something controversial but we are at a dinner party in someone else's house. They ask us to leave. [banned from relay]

––– not technically censorship, but getting into an area where an outside party is controlling the conversation. Unfortunately the architecture of the internet makes this an increasingly difficult grey area.

• Me and you are talking... 10s of millions of people have all gone to the same "house" with millions of conversations & where each person explicitly chooses to receive messages and posts from a self-curated list of people. The state, funded by all of us and external both to any and all conversations being had, plus not an owner or stake holder in the house, threatens the host with shutting it down or fines if they do not put tape over our mouths so we cannot speak... specifically we cannot speak about how corrupt this external party is. [Social media censorship]

––– this is censorship. This is a problem. And this is why #Nostr exists

If you are moaning about someone blocking or muting you, then cry harder. 😁