Why “bad for the country”? It’s permissible (albeit difficult) under the Constitution. One would think an elected representative might pay attention to the fact that a significant part of her state wants not to be. At the least it serves as a wakeup call that the current Democrat approach of “we have the power, it’s ours forever, and you have to do everything we dream up” might be a bit off-putting?
Let’s say eastern counties vote to secede and get a high turnout. How are the liberals there going to fight? 30% of the rest of the state could do it.