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Democrats and progressives listened for years to the "don't be too polarizing" mantra. It got us George Bush as President and everything else that happened in the last ten years.
Translations:
"Things are too polarized" = "Just do what the far right wants you to do".
"We need to find the center" = "Just move closer to the far right."
It all worked, by the way, in this way, things slid to the far right, more and more and more, thus the situation we find today.
The author pretty much reveals his stance with the affinity for the views of OReilly and that he actually thought that GW would be a good president.
Of course someone like that will think that Democracts fighting back and becoming Democrats again are being too polarizing.
Of course he would.