"Ecological dynamics" is the inspiration. This learning method was not created for Jiu-Jitsu, it's a movement science (I think) thing. People who went to school developed and studied it, which TBH already makes it more valid than most other Jiu-Jitsu coach's approaches to teaching their students.

It's not about techniques. Basically, what the approach says is that the best way to learn is not about memorizing techniques that your instructor shows you. Kind of like with dancing - learning a bunch of steps is really hard to memorize.

Task-focused games for learning BJJ. Ecological BJJ coaches teach through "task-focused games". Instead of learning a series of techniques to learn a concept, you are learning a game that will help you learn a concept, and the techniques follow as you reach higher levels of the game. There is still direction - it is not chaos.

Learning to train. Another benefit of this is that you learn how to train for skill development, not ego satisfaction. As someone who wasted precious years counting points and advantages in every training round, this is very appealing.

Does it work? Standard Jiu-Jitsu in Maryland is probably the most famous gym using the Ecological Approach (although I don't think they even call it that?). They have produced high-level competitors and many gyms are beginning to follow suit.