That's a longer thread than I can make sense of on Damus, but one thing that sticks out to me:

You could run a relay, nginx, and a web client on an old cell phone duct taped to the wall next to your local coffee shop for free. It wouldn't be a slick, global, social network full of celebrities, but it would still work.

People might be spending a lot of money on it, but that's different than building an architecture that has inherently high operating costs. Nostr will never die as long as anyone gets value from it.