It’s an old trick. Associate some up-and-coming voice on the right with a nutcase on the left.
They did it with Rush Limbaugh 30 years ago. Lumped him first with Mort Downey, then with Howard Stern (with whom he shares a birthday). The MSM never mentioned Rush’s name without mentioning one of those two as equivalent.
Joe Rogan is not “a nutcase on the left”.