This is a little off the path of the subject, but Olbermann fits into it.
I've noticed a trend over the last decade or so (I think Trump and the spell he has on many plays into it) where many far left liberals have become just flat out miserable people. They hate everything from their country to themselves and lash out at anyone that comes into their realm. Their aim, realizing it or not, is to make everyone else miserable too. It's a sad existence.
And I'll say this about the very far right... they don't appear to be miserable, but many have lost their sense of reality. They have no self awareness. More and more, they buy into conspiracy talk and then get tangled in that web, all the while, thinking they are the sane ones.
I personally know people on both ends of this. In both cases, it's sad to watch. Annoying at times too. But mostly just sad.