In my opinion, many people find it easier to complain than take a value-based approach to considering anothers viewpoint. You have made it very clear that your methods have worked particularly well for yourself (as a trained musician). Furthermore, you have pointed out that these same methods have worked for countless others. I don't interpret your ideas as confrontational, but rather informative and substantive.
If I decide not to agree with your viewpoint, that is my decision, and there is no room to criticize you for it. However, I would much rather consider your experience as immeasurably greater than mine, and learn from it.
I would be interested in hearing your thoughts on why people play out of time.
When one pays for lessons in learning the law, medcine, art, sculpting, acting, cooking, gymnastics, sports language, dance, boxing, karate, martial arts, etc, etc there are always solid methods to learn. Only in today's musical time do so many people feel that there is a broad way to learn how to play.
My learning methods didn't work for me only. They work for everybody who follows them. They;ve been around for far longer than I've been playing or teaching.