Can someone help me better understand #nostr? Is it really so #censorship resistant as we claim it to be?

If I need to see other peoples #notes I need to be connected to the same #relay. I know relays can pop up again in a different place and time. But it would be a different relay anyway - so basically closing down the “the hasic free relays” most of us are using right now - will deal a serious blow to nostr. Am I right or not at all and I did miss something important?

Can you point me to the relevant sources on this topic?