Last time I configured relays I set nos.lol as my main one, and that one has seemed functional enough for now, so I haven't changed my settings, but I have been jumping around between different web apps on an old phone and not checking how each web app handles relays. I see it as real-world stress-testing.
I should put it like this, what I see with nostr is some censorship resistance, and a lot of potential for censorship resistance, but not enough censorship resistance.
People hype nostr's censorship resistance up like it's already hit one of these milestones when it hasn't yet:
* Clearly matching the functionality of state of the art electronic communications
* Clearly surpassing the rest, becoming the new state of the art in and of itself
* Pushing the state of the art back to where it was at the peak of human technology, like when Aaron Swartz was still alive at least
* Surpassing the most freedom of speech humans have ever had