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

https://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.