I think the no-delete feature inspires care when creating notes. It makes me think thrice and I appreciate it. I believe it does lead to more thoughtful engagement, and the trolls who don’t regret anything they say will lose interest in nostr because of non-engagement with their bs. The key to success for nostr is to continue to do what everyone tried to tell people to do on traditional social media forever: DON’T FEED THE TROLLS. Nostr gets this better than anywhere else