The problem is, people with seemingly unpopular views do not know which of their acquaintances share their views. So it’s hard to estimate the popularity of a given view, and the default option becomes silence. Inevitably, the popular view quickly seeps into the void, meeting no resistance as it becomes the de-facto standard of thought.
The end result is a polarized society driven by a stagnant discourse of self-indulgent moral platitudes.
Intellectual conservativism was destroyed from the right. Incoherent anger politics turned out to be far more effective at getting the voters.
Edit: meanwhile in Oregon the conservatives have fled to break a quorum rule and are issuing press releases with armed anti-government groups. As the Maoists discovered, who needs intellectuals when you have guns and slogans?
Intellectual conservatism - at least under certain definition - is tricky to defend. When there is a choice between "progress" - moving forward - and "stability" - avoiding changes - staying implies perceived perfection, which doesn't seem particularly intellectual. Progress doesn't just mean "change by all means", but conservation does mean "reject change", otherwise there would be no difference to talk about.
Without wading into the weeds, one casualty of these American political times is the loss of intellectual conservatism as a tenable public position.
We are all made greater having our convinctions tested with honest debate, and lesser for the lack of it.