I want to hecking scream.
The point of the original website in this chain was not that you couldn't do media queries, or that all of your designs had to be unstyled. It was a gosh-darned satire that showed that even if you did literally nothing, your website would still be responsive and readable and load fast. The fact that it did nothing, that it was just a completely unstyled HTML page was the reason that the joke worked.
The point was to showcase that often when "native" web features break, those problems can be traced back to things we added to the page, things that are nice, but are not strictly required to view content online. It was not saying that we should get rid of CSS, it was saying that the web, by default, without any technical knowledge or design chops or engineering input, still works to deliver content.
So naturally, the first thing the web community does is set up a build chain, add some CSS, mess with the contrast a bit, and start some kind of childish competition about who can make the best minimalist stylesheet and get the best HTTP compression set up on whatever pointless server setup they have and to start arguing about what license they're using.
You are missing the point!
The point was never to say that you couldn't add media queries to your website. The web community looked at a brilliant satirical piece and instead of sitting down and thinking about it for even just 5 minutes they immediately proved it right by showing that there was literally no context anywhere, even in a joke page, where they wouldn't be overcome with the irresistible urge to fiddle with things.