You say this confidently, but this is merely one theory about how things should work.

If I make a product in my country, where it’s legal, and a buyer purchases it from me and then brings it to you overseas where it’s illegal, and someone in your county tries to sue me for it, they are typically going to have a hard time. (Unless your country is powerful enough to violate the sovereignty of my nation.)

In most cases, you accessing my website is more like this scenario. Intermediaries (ISPs) brought you the product. I simply offered it to anyone who came to my “store” (server). I admit that this dynamic changes if you directly pay me for something.

Your framework implies that every social website needs to make a decision on whether or not users are allowed to insult the Thai monarch[0], and then must block access to Thais if they decide it’s allowed. In reality nobody does this, although they may choose not to put a server in Thailand if they are worried about it.

[0] https://en.wikipedia.org/wiki/L%C3%A8se-majest%C3%A9_in_Thai...