There are many reasons Cloudflare should be hated. The main one is that their goal is to centralize the Internet. A secondary one is all those bloody captchas. A tertiary one is that they often block Tor, even if you pass a captcha. Yes, it's configurable, but their recommended settings are the ones that help break the internet. A fourth one is that many DDoS-for-hire sites are protected behind Cloudflare, which allows them because they are good for its business model. Need I go on?

However in this case I think we can rely on them to tell us what they did. If they say they got a 7.3 Tbps UDP DDoS, chances are good they actually did.

tbh i get you ; but one has to realize this has nothing to do with that company and everything to do with the current nature of technological business where "everyone wins it all

What I say is that instead of hating on cloudflare one can look up how a DNS server works and start getting into DDOS mitigation ; but even after a couple of month anybody would still just have scratched the surface of it.

I don't think it's Cloudflare "goal" to centralize the internet, neither it is to set up captcha everywhere ; but it's definitely frustrating

It's every internet company's goal to centralize the part of the internet that aligns with what they so; cloudflare's part happens to be most of the internet, since they provide low-level infrastructure services.