To downvoters: please don't shoot the messenger. I'm not happy about the existence of Cloudflare (or their competitors who do the same thing) either.
That said, the choice is yours whether or not to use sites that utilize such untrustworthy MITM providers, like Cloudflare. There are even browser plugins that can automatically block connections to such untrustworthy entities.
This isn't an endorsement, and you should always review the source code of any browser extensions you're utilizing due to the risks extensions themselves can pose, but I personally use one called Cloud Firewall and it works great. (https://addons.mozilla.org/en-US/firefox/addon/cloud-firewal...)
>There aren't obvious signs up front that a site is using cloudflare.
You're joking, right?
It takes 2 seconds to click the padlock in your browser, click through once more, and see "Verified by: Cloudflare, Inc". You don't even need to view the certificate.
If 2 seconds and 2 clicks is too much time and effort, it's obviously not actually that important to the user in question.
