NOSTR is so easy to use and starts working even without doing anything... These people are conditioned to centralisation and control.
Read the comments (you may have to translate them). Shows us that we still have a lot of work to do with the onboarding process and out-of-the-box usability of nostr.
https://x.com/21clubz/status/1813575294722449851
Discussion
Best guess, half of them looked at nostr some time last year, had a slight problem, never checked back since then.