Could it be that this represents a system for generating music?

[eggyk]

It is not just about music in general; as stated on the site, it concerns the techniques of musical composition.

As one example of this, I provided several diagrams illustrating the process of creating a motif—have you had a chance to look at them?

I looked at the site, and did not see diagrams of anything. Simply screenshots of the VMS pages accompanied by text saying something like:

Plants = Vertical: Relationships among the elements that constitute a musical figure
Women and water = Horizontal: The flow of musical figures and phrases through time
Circles = Tailoring: Techniques for modifying and combining motifs

What does that actually mean? How would someone use it? 

And again, what makes you think it's true in the first place?