I first heard that joke in a 1990’s standup routine, fwiw. It could have been the same person telling the joke, I guess.
Anyway, it used to actually be used by white american racists; it’s been weakened to just self deprecating humor, kind of like jewish comedians like to tell jew jokes.
To me it just looks like parent is cherry-picking some domains to try and put words in their mouth.
If the person owns roaches.com out of hundreds of domains then you're going to try to make it racist so the owner looks racist?
I never understood why trying to make innocent things racist isn't considered racist itself.