Nonsense. Those were exceptions that proved the rule. Most Christian monks weren't so philosophical, and their job was to copy old manuscripts, not write new ones. Even the Christian philosophers you cite were dogmatists, not free thinkers. Sure, they were relatively philosophical and intellectual, but only within the parameters set for them by their need to support the Church.

Hence Britannica says scholasticism encompasses "the philosophical systems and speculative tendencies of various medieval Christian thinkers, who, working against a background of fixed religious dogma, sought to solve anew general philosophical problems."