Why Shouldn't Piano Lessons Rock?

I found this article to be very interesting, especially in that it tends to be a big debate-- not only with piano teachers, but also between students, parents, and other music enthusiasts. Diversity, balance, and experience is what makes music, and that is the foundation within this article. Naturally, this is something that I can't stress enough. When passion and talent is involved, there can often be issues between teacher, student, and parent.

The basic idea of this article is for each person to play the role they're supposed to play. As a parent, it is optimal to play the parent role. A parent playing the teacher role may lead to frustrations between repertoire and progress. While intentions there are always good, (as the parent just wants to see their child succeed and progress), I believe the most important role belongs to the parent in that their primary job is to find the best fit between their child and a teacher, and to encourage progress, not direct.

Debate? Discuss? I'm interested in your thoughts, opinions, and experiences.