At this point, it's just something stupid people say. It used to mean that when you pointed out that my people were desperate for the freedom of living under capitalism, I would point out that you lived in an apartheid state.

Somehow, here, "whataboutism" means that if after you point out that the EU is coming up with an age verification system that they claim preserves personal privacy, I point out that the EU is also very much, openly, against any sort of personal privacy. Somehow that's some form of communist propaganda. Or Russian propaganda. Terrorist? Whatever. The important part is that I'm someone who should be watched or arrested if I continue to question your motives on behalf of our enemies.