I looked around, and I'm not sure if those courses have anything to do with music theory, It seems primarily on teaching you how to use a certain synth and maximizing its potential. If you don't know the fundamentals of modular synthesis, I doubt anyone will go far with these courses.
All of this information (or most, anyway) can be found easily and for free if you dig deep enough. I don't like the idea of paying for information you can find for free.