For all the times you hear "if you don't like it, leave", it does rub me as rich that they would want to move the line instead of stepping over it. I'm not saying it's easy, but giddy up, how about some pioneering spirit?
Why isn't "if you don't like it leave" a productive suggestion in pretty much any case?
Per the guidelines of this site, we are recommended to take the most charitable interpretation of the other commenter's post. Similarly, you could pay more heed to the more nuanced arguments of the other political side, and just ignore the non-productive arguments like "if you don't like it leave." Throwing that suggestion back over the wall, isn't going to lead to a productive conversation.