I appreciate your points. But I think twitter shouldn't be underestimated, there's a lot of leading thinkers and writers and all sorts from wide fields (I'm talking well outside of just bitcointwitter obviously), you cannot discover these here or elsewhere, cos they're not there. There is also a vibrancy there. I think people are aware of the downsides of 'being the product', of censorship (much improved but far from perfect under Elon), of an Outrage algorithm etc etc and aware of the trade-off and don't see a viable alternative atm.
I think the alien onboarding process of Nostr is surmountable tho if there were a desire to be here.
But I think there is also a general desire for a nostr or nostr-like platform, so I don't think it's impossible.