So this boils down to Cloudflare, supposedly having more regulatory capture than Google.
Google is the bringer of traffic and if you want it, then you play by their rules. I don't like that the web is in that position, but here we are.
Some sites don't get enough traffic from google to sustain their business where they previously did. Wholesale blocking google crawlers doesn't seem like a risky move for them.
It makes me wonder if that is a trend? Will more sites go to 'google zero'?
They do have ads in search though. I guess it depends on how much more money they make from people spending more time not leaving google vs showing you display ads on other sites.