[cabraca]

Its probably a GDPR thing. They know the IP in transit but are not allowed to store them without user approval because IPs are PII.

[dtx1]

That does not work for the pirate site operator though. In order for Cloudflare to cache and proxy any request the endpoint must be known beforehand and must be at least constant enough for any new request to be forwarded to that endpoint in some capacity. It might be true for users that they chose not to log that information but it cannot be true for any site they provide CDN/Proxy services to.