I'll make an exception because you've asked a good question that I think will help illuminate our different viewpoints.

> If Talibans somehow became a majority in the US, would you still consider it "their right" to vote away the democracy and establish Sharia Law?

Yes. The current form of government in the United States is a representative republic that has a constitution that defines processes for dramatic change including a constitutional convention that allows for open-ended changes to the constitution itself.

I don't have a divine right to the land, water, or air here.