That is a generous reading of the paragraphs of rambling on that page. The author lumps half of all voters in with actual "extremists". It is just useless, divisive political vitriol.
One thing I have learned over the years is that politics is extraordinarily complex. Painting with wide strokes and making caricatures of the "others" isn't useful or accurate. Nuance is just too complex for our monkey brains, so tribalism reigns. We must demand better every time this kind of drivel appears, regardless of the level of agreement with anything being said.