Given Cloudflare's reputation for shakedowns once you pass their undisclosed thresholds I wouldn't trust them with my domains.

I'm not expecting something for nothing, we all need to eat. I'm happy to stay within any limits or even have no free tier at all.

I just don't want the fear of waking up to a sales email one morning demanding I suddenly fork out more then I earn in a year off the project for an enterprise plan because I've exceeded their undisclosed thresholds.