The left leadership and its propaganda machine, hates Limbaugh because he is always one step ahead and confounds their scams and schemes. One fun thing to listen to on the Limbaugh radio show, is when the left wing media gets it's marching orders and all the left wing news outlets; CNN, MCNBC, ABC, etc., use the same buzz words. Rush Limbaugh will record all the main media personalities, and then play them all saying the same thing as a college. His audience can see this is rigged and choreographed. That is why Rush says he ties half his brain behind his back just to make it fair (to liberals).
For example, does any remember the collusion delusion, when the DNC leadership conned their base into believing there was Russian collusion with Trump? Their base fell for their lies since the DNC was in full media propaganda mode. Limbaugh figures out their scams and informs his audience. Had the left listened to Rush, they would have known how the collusion delusion would end, two years in advance. Before Rush more scams could work.
Limbaugh's analysis of Mayor Pete was accurate. Kissing his husband in public may consolidate his progressive supporters for primaries, but this gesture will not go over as well in the general election. He should learn from the advice. Many people are good with an abstraction of being accepting of gay marriage. However, too much real time visual data can impact their metastable abstraction.
As an example, I can accept the abstraction that one may need to spit if you have a cold. This is logical and can be accepted in theory. However, if someone was coughing up nasty things and spitting where you can see it, your original abstract acceptance will be replaced by a gag reflex. Mayor Pete is better off leaving more to the imagination, where acceptance will be easier in a general election. Rush did pick Mayor Pete last year, when he first appeared in the spotlight, and thought he could do well in the primaries.