Diatonic VS. Intervallic Theory - Which one is better?

My name is Frank Herrlinger. I've created and run an online academy that teaches composers how to master Interval Theory—a groundbreaking and intuitive approach to composition. Join me in a live Intro Event: https://musicintervaltheory.academy/intro/ My mission is to help composers break free from generic progressions and write music that truly stands out. Many of our academy members, who range from aspiring to professional composers, go on to compose original scores for films, TV, and video games. And they love their competitive advantage!