These are mere excerpts from a much broader context. They fit well in his overall thesis. Rejecting him out-of-hand, as you do, ignores that.
Some excerpts reveal a mindset. His is a secular humanist drivel, adequate in discussing the events of the 19 century, completely useless in comprehending the Middle Ages. In addition, the tone of the excerpts is unprofessionally propagandistic, as he goes from one anti-Catholic button to the next.