When a video is uploaded to YouTube, it is visible to the rest of the world, meaning YouTube displays it everywhere. **Does this mean all countries' law applies to it?**

If the videos are in English and are about science in general, does this mean if some countries someday ban (imprisonment) science videos or use a specific colour in videos, can they extraterritorially enforce this imprisonment if they are in some other countries like the USA or India?

I mean, can a country just bring any YouTuber to a jail outside its borders (using its national language as the language of the video) who uploads content of international appeal because of some law?

Also, can a country just hold liable for YouTube's data privacy practices a YouTuber outside its borders and enforce the judgment if the practices of both YouTuber and their channel and YouTube is legal in their home country?

One last thing is whether the inclusion of ads makes a difference?