How much damage has the libertarian movement done to intellectual discourse vs t

How much damage has the libertarian movement done to intellectual discourse vs the good? How much damage has the marxist movement done to intellectual discourse vs the good? How much damage has the conservative movement done to intellectual discourse vs the good?

The conservatives have contributed nothing. The Friedmanites did something good, but the rothbardians have been a disaster. The marxists haven’t done any good, nor have the postmodernists, and they have been as damaging to the civilization as was christianity.