There's a huge difference between being ignored, and being deplatformed. From what I've observed thus far, offensive behavior on Nostr mostly just gets ignored and the bad actors eventually give up and move on.
Discussion
It's all incentives.
You can be as big of an asshole as you want to be, but that might incentivize people to stop listening to you. If you feel like your achieving whatever it is you want to achieve, then great, keep on it. Otherwise you might need to change your approach. Incentives will take care of the social etiquette in a way where no one person or group has control.