> when will the rest of the world kick China of the internet?

By "rest of world" do you mean the USA? Or Europe? Or basically "the west"?

When does it sound like cultural imperialism?

Are countries (and their citizens) only permitted to be connected to the internet if their culture matches that of your country/federation?

How is that not an offensive idea?

Usually, I reverse statements and if I find them offensive in reverse they are probably offensive full stop. This one is pretty offensive.