They changed their TOC a while ago, the only thing they have in there now is boiler plate stuff about not hosting pirated content.

www.cloudflare.com/en-gb/terms/ You agree not to, and not to allow third parties to use the Services to … post, transmit, store or link to any files, materials, data, text, audio, video, images or other content that infringe on any person’s intellectual property rights or that are otherwise unlawful;

I just set up a cache rule to ignore my jellyfin subdomain and they won’t ever care about me and my half dozen users.