My thought is why don't the authors use github pages to host their static site with their links to a dedicated server with an unmetered link since their whole project is CC0. Downloading assets doesn't need to be low latency, thus I don't think the caching spatially near the user is important. Having a user login for patreon is something that would be missing and require some more thought I admit.

I think quite a lot of other people have mentioned in the thread that they are getting a lot of other "benefits" from using multiple services, but I don't see how these help solve the problem of data delivery besides taking advantage of the Cloudflare + Backblaze alliance which is $31 if their main website is a static one.