I am here for all the non-blockchain parts of the nostr tech. I think blockchain will eventually be niche and that some kind of likelihood of trust will prevail. i.e. The people I trust say this will spend so good enough for me. You can get burnt sure, but completely trustless is impossible, everyone else may agree on a change to your detriment. So why not rely on trust to begin with and loose the speed and energy use problems of blockchains and proof of work?