Why Victor made this
This came from real frustration and a better fit
In the video, Victor explains that he tried traditional classical training himself in college and simply could not run with it even though he got a degree in music. But this chord-based style helped him play in groups, lead praise and worship, and enjoy songs on his own personal time.
This training comes from lived experience, not theory. This training exists because a different method made the piano finally usable for the kind of playing he actually wanted.
If your goals are similar, this may save you a lot of time, pressure, and frustration.