From my perspective as someone who learned for about 8 or 9 years, there's a lot of theory here. Personally I never learned much theory - as a child, playing piano wasn't something I particularly enjoyed (and it's only now as an adult that I do it occasionally for fun and appreciate the time I put in), but back then learning theory was even lower on the list.

I do think theory is useful for understanding the mechanics of music, and may help accelerate learning any instrument.

My teacher pulled a lot of material from the Royal Conservatory of Music (and I didn't learn theory from them). I haven't heard of this course until today.