One of the biggest problems left/liberal leaning people have when debating is concerned, is they’re often convinced they, and their viewpoints, are superior and this should be obvious to everyone.
As a result, they’re often completely unable to make a case for their beliefs when challenged. They never thought they would need to.
Being able to actually make a case for your beliefs requires actually understanding them, and knowing the downsides ahead of time.
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.
Fortunately for me, those are third - rail issues where I live. Even our most conservative of leaders won’t go there.