Keep in mind that Cloudflare is US company. US government is infamous for secret subpoena and gag orders toward the US companies. Also US government is infamous for serious and illegal spying. They also holding known vulnerabilities information from public for greater good(for them).
There's also no trust with ISPs. They've already all lobbied at the Congressional level to legally sell our data. The NSA already captures/stores everything that comes out of any of their datacenters. So whose DNS do we use? A shitty company's, or another shitty company's?
>They've already all lobbied at the Congressional level to legally sell our data.
And succeeded! And even as they did it and succeeded, claimed that they didn't want or need that ability and /totally/ wouldn't take advantage of it if/when it did pass.
it's also a business. As soon as they find it advantageous to start selling that information, they will, and will ride on their reputation for privacy to make as much as possible from that information
Practically, no trust.