I completely agree with you (which is why I persisted in my learning style). From my experience it seems to me many people are confused like this.
Possible explanation: We learn some things by copying or early in childhood, and we learn some other things explicitly. I guess this makes many people think that skills are divided to "explicitly teachable" and "explicitly unteachable", using some heuristics, such as: "if it is usually learned at school, it is teachable", "if I tried to learn it and failed, it is unteachable", "it is teachable only if I perfectly understand how it works", etc.
It probably adds to confusion that we don't see how other people learned their skills. Similarly to attribution fallacy, if we see someone good at doing X, it is easier to assume that it is a part of their nature, not a learned skill. (And those people may support us in this opinion, for example because it discourages the competition.) Seems to me this is pretty frequent in art. Also, sometimes the idea of "unteachable skill" is a good excuse for not learning and doing something.
Even those people who learned e.g. playing guitar may not propagate the idea automatically to other aspects of their lives.
It probably adds to confusion that we don't see how other people learned their skills.
Sometimes people don't see how they themselves learned something. When you ask them, they confabulate empty phrases like "it's a knack", or "eventually you just get it", or the like. They generally suck at explaining. So, ignore them and move on.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.