The trouble with cloudflare is that there is just one. It’s one of the best registrars out there, the only free/cheap and usable DNS host (have you seen what route53 charges per zone??). That without getting into the whole tunnels and DDoS mitigation end of things, which is nearly unique at any price point.
The problem with cloudflare is that we’re missing three other cloudflares to move to if they decide to pull evil shit.