There’s an added problem here: for many years these liberal opinion shows offered the worst sort of stereotypes about conservatives: that they were racist, homophobic, xenophobic, sexist, unfeeling, authoritarian, militaristic (without actual military service), pro-fascist, etc etc. These stereotypes were almost always unfair and conservatives were rightly pissed off about them.
Then the Republican Party chose as its leader a guy who openly embraced every one of these stereotypes!! And even now he remains the most important person in the GOP. This makes it a lot easier for the liberal opinion hosts, and a lot harder for conservatives to be angry about the stereotypes.