I wonder if Russia is blocked as well. And Belarus.

If they want to prevent fake war pictures, it should be done with their NSFW filter. Not with blocking the whole (suffering!) country.

I doubt it - GPT-3 is also restricted for users in Ukraine.

Well, those who want to generate those images will use Stable Diffusion. If this is really their reasoning, they'll just hurt themselves - not really a bad thing given how manipulative OpenAI has been acting.