I think you need to go back and read the post a little more critically. The ideas that are presented are not "liberal" ideas but the ideas that conservatism supposedly wants to "conserve."
The history of who a nation and it's people are is certainly not expendable if you believe in those ideas. If you are saying that the ideas traditionally held by our founding fathers and patriots are expendable then you must value them very little. It would then follow that there must be other beliefs such as communism, socialism, fascism or some other "ism" that you believe in.
What do you believe in? Pure democracy says that the majority is always right is not what our country was founded on and is a form that condones anything as long as enough agree and that nothing but blowing in the wind. Being blown this way and that with no real personal beliefs.
What did the old country song say? "If you don't believe in something, you will believe in anything."