Then block the website in your country. If I have no physical, legal, or economic presence in your country, I shouldn't expect to have to follow your laws. Do I need to start enforcing Thai lèse majesté laws too, now?
This should not be the responsibility of the website owner to comply with the laws of a country they don't have a presence in, presumably under threat of either extradition or arrest if they one day happen to enter the borders of the country.
If the website doesn't comply with the laws of the country, that country should block it, and that should be the extent to the action they can reasonably take. Unless you think Belarus should be able to arrest somebody passing through their airspace because, say, some other individual made a comment critical of Lukashenko on their blog?
> e.g at first more than a few American websites simply blocked all EU traffic after GDPR was approved
Those websites have parent companies who have an economic presence in the EU.