My Answer

Liberalism is more fully an integrative and adaptive approach, which conservatism is supposed to be as well but with an emphasis on and respect for traditions and established ways. So the problem is extremism and polarization, in which case either approach can become reactionary and self-negating. Normally this occurs through utopian and puritanical impulses, more naturally coming from conservatives. They are also more likely a minority in a democracy though I understand both Bismarck and Disraeli saw extending the franchise wasn't a threat to the right because many workers and lower class voters would instinctively choose what they would perceive as the stability of conservatism.

Utopianism can infect the left as well, but most often under duress from the right. 'Wokism' is exactly that. In my experience conservatives are much more prone to confirmation bias. That's natural since they're more on the side of preserving an existing order and suspicious of change and adaptation. Confirmation bias is a harder fit for liberalism's moving target of adaptation than conservatism's fixed target of protecting the status quo and existing order. I'm an instinctive conservative who ended up on the left because I didn't see Republicans, in the American example, as conservatives at all. Which I think happened because America's constitution is ragingly progressive. 

So all Americans were called on to be conservatives in the sense of preserving that inherent liberalism thereby crowding the conservative space and forcing those identifying as the right into an extreme and reactionary posture fighting against constitutional norms. Fighting against the law and for overthrow of the government, in other words, to the degree the government is true to America's ideals and the core, liberal beliefs embodied in its laws and traditions. This is playing out now as people claiming the mantle of conservatism wantonly destroy American society and constitutional governance. Or, if that's actually conservatism, it's nothing but the rationalization of animal drives.