Ah yes the alt-right paradise. "@hitler.rocks" and "@nuke.africa" are really nice domain to have :)
The administrator of cock.lu also famously hosted with oVo systems some more than sketchy boards.
[1] https://www.lemonde.fr/pixels/article/2019/10/11/derriere-l-...
Cock.li on the other hand is run by the OvO systems owner himself.
Some people are way too serious on the Internet. If you are offended by a bunch of words without proper context you really need to go outside.
Also see this thread that discusses this at length: https://news.ycombinator.com/item?id=33142122
I'd also argue that most people that complain about those jokes unironically think that author is actually racist, like it doesn't even cross their mind that it could be a joke, even a "bad" one.
Ironically, the fact that some people react in this way makes these jokes even funnier