Some "challenges" are completely without merit though. Conservatives like to "challenge" the human rights of women and minoritised groups. The rights of people to exist within society and pursue happiness are, to progressives, axiomatically true. These challenges aren't something to be argued, they are something to be rejected as abominable.
If conservatives want to challenge tax policies or foreign relations or other such issues, sure! That's a discussion we can and should have. But that's not the same as challenging the ability for certain demographics to exist within society.