It didn't seem like the author understood how kabuki is being used. It does not necessarily imply disingenuousness, but it does imply emotion wrought to the point of bathos. My guess is that Rush Limbaugh doesn't think the left are lying, just that tragic flaws underlie their passion. I don't know if there is any element of that in kabuki. It is key to greek tragedy, and I'm pretty sure pundits have invoked greek chorus in their criticisms before.
I guess if I were to name an artform enough to feel posessive about it's use, it would be "Star Trek episode."
"Just like a Star Trek episode, congress went through a harrowing drama that had the very foundation of the republic teetering on the edge of disaster. But at the end of the day, nothing had actually changed."