I don't know if I would say "extraordinarily" racist. It's certainly the kind of casually racist, old white people sort of thing you would frequently see on Lawrence Welk and shows like that as well, but not particularly evil, IMO. This kind of shit smacks more of people who are just way out of touch with society and don't care about even trying because they can't comprehend what's wrong with it.
Also the title itself is a reference to the description of that Al Jolson clip a few down the front page as "extraordinarily racist" and the whole joke of it is that it's so extraordinary that the same thing was happening on TV 50 years later.