I agree with it. I have some familiarity with St. Benedict, but more with St. Ignatius of Loyola, having taken his 30-week spiritual exercises with a Father Hardon-like priest twice within the past 4 years.
I would say that St. Ignatius and his spiritual exercises understood and explained more about human psychology than anything written by any so-called "psychologists" since.
The root of psychology, after all, is psyche, which in Greek is "spirit." I have no problem with objectively true psychology: it is just that most of what passes for today's "psychology" is not true, but errant.