To me, and probably to you, Hillary Clinton and Joe Biden come across as eminently reasonable, moderate, center-left politicians. To Michael Anton, however, they are just different manifestations of the Beast of the Apocalypse. The right was consequently justified in doing anything necessary, regardless of the risk to liberal democracy, to keep them out of office.
Can you imagine what he would think if, say, AOC were the Democratic nominee?
It is difficult to tell to what extent Anton molds, as opposed to merely reflecting, opinion on the right. What is certain is that his vision of America going to hell in a handbasket motivated millions of Trump voters and the January 6 rioters, and will continue to influence the GOP unless and until it is generally accepted by the right that the left does not intend to destroy their culture and way of life.