AFAIK Cloudflare is only anti-Tor in the default config. I understand it is trivial to turn off the Tor aversity in the Cloudflare account. But is an opt-out feature and most people don't bother. They will.
All Tor exit nodes are known and the real-time list can be downloaded by anyone at any time. (this is by design and is a great feature to protect exit node operators)