And when Cloudflare is the proxy for a web site, it's Cloudflare that provides the HTTPS connection, meaning that you don't actually have an encrypted channel directly to the site. Cloudflare is the man-in-the-middle eavesdropping on all of your communications with that site. Your bank transactions, your medical records, your personal messages, etc.
Do you know how they're able to insert that error page into the response that reaches your browser, even though it's an https connection and your browser assures you that it's "secure"?
Clouldflare is able to do this because they are a middle-man between you and the site. They can eavesdrop and/or alter anything sent or received on that connection.
Weird how much of a monopoly cloudflare has on the internet. I guess it's going to start being an indicator for me for services that have becomes "too big for their britches."
One of the easiest, perhaps. Not best. Anything that gives a single entity control over so much of the internet, and positions them to snoop on so much of everyone's communications, will never be "best".