I have seen examples both on the left and right accusing the other side of not having any actual values other than opposing their enemy. I see this accusation as mostly untrue for both sides. Rather, I suspect that most people have already made up their minds on their political views and see no value in trying to repackage their message to appeal to those who are inherently opposed to those ideas.
So we see less of that kind of engagement attempted, thus "no actual values" are seen.
This is not to say that there is never anyone who has changed their views. But generally this is not due to some well crafted argument made by some pundit, but rather a life experience.
My dad for example used to be a liberal Democrat. That changed the moment he started paying taxes. For those like him, there is value in the information presented by pundits, since they now have a necessity to discover what they were never hearing due to a major turning point in their lives.
This is not to say there are not the hardcore types who operate only to oppose the other side. Donald Trump has made many people come out of the woodwork who merely want to oppose him at all costs. I recall RFK Jr getting opposition from the New York Times when he criticized the use of artificial coloring in food, only for them to fall over themselves in proclaiming "there is very little difference" in non-artificial sources. The only difference being: the artificial source itself.