It's quite sad to see incompetence at these levels. This is a static page that loads JS. They even inject styles via JS...

It’s not incompetence they are intentionally doing as much as possible via javascript to reduce their bandwidth costs. This is because most access to the domain is automated (not using a browser, using curl etc) and doesn’t load javascript

They use Cloudflare, which does not charge for bandwidth.

For free users. But cloudflare picks and chooses its free users.