I'm somewhat disappointed that the authors did not realize that apple-relay.cloudflare.com is not PCC, but is publicly known to be part of iCloud Private Relay.

I'm somewhat disappointed that the authors did not realize that apple-relay.cloudflare.com is not PCC, but is publicly known to be part of iCloud Private Relay. That made me immediately think that there were other parts of the article which were not properly investigated, and likely a fair bit of sensationalization.