No. But you have to assume that there are some lurkers, just as there are likely to be anywhere. nostr:note1n6y59rs20d8j0hah5ysyja08dn7x2wmjzd2ekjzqfxcweyk7gn5sqafvmy
You have less privacy than you think. Your opsec is not as secure as you think it is. Conduct yourself accordingly. Below photos are from the Tower of London, graffiti from the prisoner Richard Blount 1553. https://image.nostr.build/12ac65e92b888fa5706838e4feb6854c03124b5b2e6bff9afd5bb1f9d34e502d.jpg https://image.nostr.build/07f530fe3c4902155c59f85c2c86546eb3f64dda808625f7aedd6a194027559d.jpg