A Weird Detail I Noticed

I entered a Kaggle competition, and I noticed that nobody from Crimea, the Donetsk People's Republic, or the Luhansk People's Republic was allowed to enter. This is obviously part of the sanctions over the Russo-Ukrainian war, but they don't actually ban Russian residents from entering. What was the point of banning the residents of occupied areas but not residents of the occupying country? That's all I wanted to say, there wasn't really a bigger point to this blog post.