Steve
Mostly Harmless
I disagree. Some styles actively inhibit skill development. If you're training at a school with solid instructional design and coaching methods, you will learn skills and develop expertise.I think the bold and underlined is the best possible answer. Styles survive because there are practitioners who learn them correctly and make them work for that practitioner
Said another way, if it takes a remarkable martial artist to make your style work, you're probably in a crappy school.