Well that's because if you click on that link from HN it uses the referrer details provided by your browser to show quite a rude message and picture ;)

Wow, never seen this before.

I don’t get the animosity HN sometimes revives.

I don’t really care for startup stuff and I just ignore it, but the average level of discussion here is extremely high. One of the best in the web.

Compare HN to Twitter or Reddit and it’s night and day, and it has been for years.

This particular juvenile humor says more about JWZ than about HN. Just look at the example ITT. The "CADT" metaphor doesn't have much to do with the developers either of X or of Wayland.