[yellowapple]

> Just making a file valid HTML doesn't make it "web content".

By Cloudflare's rationale it does.

> For example the load on human-viewed content is limited by how often people want to view it. Not how often their browser wants to redownload it.

Bandwidth is bandwidth. If 100,000,000 humans want to download a 10KB text/html page v. 100,000,000 programs wanting to download a 10KB text/plain file, both within the same time period, then that's going to be the same degree of load on Cloudflare's end.