Well, one of the big differences is the fact that you don't have to provide any information to use 1.1.1.1 or Warp, just download the app. That means that at worst, the only personally-identifiable information they get is your IP and usage patterns.
If CloudFlare is bought by Comcast and they start doing Bad Guy Things™, then your exposed surface area is rather low.
If CloudFlare is bought by Comcast and they start doing Bad Guy Things™, then your exposed surface area is rather low.