Ugh, you're missing the point. He did not provide information. He stated something and then in later posts stated something about musical facts without elaborating. Again. what I pointed out is that he was a view and that's fine. It's that a lot of us are saying that telling us we're wrong and doing the wrong thing towards learning is in and of itself incorrect. Your analogy could use some work, this isn't about comparing flavors, that's irrelevant, learning styles like your fingerprints are unique. Each person thrives in different ways, I have years of experience with this and specialize in it minute after minute, day after day. My room has students who are worlds apart in their abilities, if I treated them or used the method that Jeff points out, nothing would ever get done. Every one learns differently, everyone has different capabilities and skills, once that is acknowledged and applied, students have a better chance to learn. Starting out with saying a metronome is useless is just trolling, my timing was awful, used a metronome for a month and I'm good to go. It's a tool, it came in handy and I would highly suggest people use one to help with timing, tapping your foot doesn't work if you can't keep time to begin with.
Criticism isn't silly, it can be constructive. It's just that folks on the internet don't always have the life skills to use the criticism constructively.