They're addicted to the Manichean cosmic battle against conservative talk radio hosts. It is something neurotic in liberals. The meme about evil conservatives in talk radio goes back at least to 1995, the '90s when Clinton was president. Part of it seems to be they are just shocked that anyone disagrees with them. Perhaps because they live such insular and parochial lives surrounded exclusively by other urban liberals.
What they say is “truth” so cannot be labelled “hate speech” ever - not even the despicable things they said about our former president.