I commented on the unusability of the site that was linked to. Mr. Knuth's site is perfectly readable because he's using regular html which renders just fine on a modern mobile browser. Meanwhile I have no idea what is going on on the parent page, except that it's unreadable. Another person shared a similar screenshot in another comment.

You may dislike my snarky little hashtag on Twitter and that's fine. I was not being snarky here on HN in my comment. I was making a perfectly valid criticism about usability.