Maybe I have a different definition of “rude”, but I feel that openly ignoring someone’s request is at the very least disrespectful, if not rude.
I’m not saying you’re wrong for continuing to record, but to your point of:
> you have to be willing to break social norms
I think this also means you have to be willing to be rude.
But it sounds like you’re arguing that being “correct” by definition makes it “not rude”.
But I’d argue whether you’re rude has little to do with whether you’re right, and more to do with how others think of your actions, especially when you’re knowingly doing something that might offend others (i.e. ignoring someone’s request).
I think a less “rude” approach might be to, for example, do an audio recording of the post-anesthesia conversation without the nurse’s knowledge.
Again, this is my take, but maybe I’m the one that’s off here.