In practice I don't know how big 996 is but a lot of people are putting in a lot of effort and excitement into their current startups. It's not too dissimilar to SF in the social network and early gig economy days, along with all the posturing about working long hours (the motto then was "work hard play hard") even when nobody is actually working the hours they say.

But the energy is a bit infectious. I'm happy to see SF on the rise again.