This theory provided a springboard for a shift in views from the belief that medieval Buddhism in Japan was represented by Kamakura New Buddhism (new schools of Japanese Buddhism founded during the Kamakura period), the view prevailing after WWII, to the belief that old Buddhism was the mainstream of medieval Buddhism.
この理論により、戦後見られた鎌倉新仏教を中世仏教の代表と見なす見解に対し、旧仏教が中世仏教の本流であるという認識が生まれた。