Here’s an excellent writeup about the dangers of Cloudflare:

https://マリウス.com/thoughts-on-cloudflare/

Cloudflare has played a good marketing game, but those of us who aren’t led by fear and emotion know better.

Cloudflare is the #1 player in recentralizing and stratifying the Internet. If they had their way, billions of people wouldn’t be able to access Western web sites and non-mainstream OSes and browsers wouldn’t be able to browse the web.

Tell me I’m wrong, @cloudflare. Tell us how you’ve fixed issues that you’ve known about for years, such as blocking RSS feeds, blocking non-western visitors, or even issues with your abuse reporting form (which is rate limited and has all sorts of issues) and the fact that you have no mechanism for reporting domains for whom you’re the registrar and/or for whom you host DNS.