I once came across a website hosting extremely inappropriate content while surfing the web. I discovered that this website was using Cloudflare for DDoS protection and other purposes. I had a bit of a look online and found out how to submit a complaint to Cloudflare. On that form, I was asked for my email address and no other personal details, if I remember correctly. On the very same day, I received an email confirming that my complaint had been accepted and was under review - presumably an automated response. It was already quite late, so I went to sleep.

And just a few hours later, I received a letter informing that the information about the website in question had been forwarded to the relevant authorities, as well as to the website’s hosting provider. To be honest, I didn’t read that second email until the next day (I was sleeping), and it seems the website's hosting provider acted quickly (or the site owners decided to cover their tracks), because when I went to that website to check how it is going, it was no longer active, no longer existed at all. It just was gone. That was about six months ago.

So... I won’t speak for others’ experiences, but in this particular case, they reacted quickly and quite effectively. Perhaps other people have had different experiences.

I haven’t but it seems you have gone through it successfully with some friction (which is probably good?)