[Sebguer]

Yes, Cloudflare has always been really shitty and automated at responding to abuse reports, and because they are the front-end connection, it is impossible to pursue the report against the 'real' host unless Cloudflare is willing to provide you with information about where that host is: which they won't typically do, even if you are a fellow infrastructure provider. It's been several years, so maybe they have gotten better, but I would be surprised.