But... why not throw a CDN in front of your site and focus your energy somewhere else? I guess every problem has to be solved by someone, but this just seems like a very strange hill to die on.
And she posts on it lots because she has a bunch of RSS clients pointed at her writing, because she's rather popular.
And she'd rather people writing this stuff just learn HTTP properly, at least out of professionalism, if not courtesy.
Hey, you might not, I might not, but we all choose our hills to die on.
My personal hill is "It's lollies and biscuits, not candy and cookies".
Because this is how the open web dies - one website at a time. It's already near-dead on the client side - web browsers are not really "user" agents, but agents of oligopolist corporations, that have a stake in abusing you[1].
It's been attempted before with WAP[2], then AMP. But effectively, we're almost there.
Yes it's been invented before, known as Feedburner, which was acquired & abandoned by Google.