So your claim is that one can learn how to do something simply by being told, and not doing any practice problems, thought exercises, reviewing solutions, etc?

No, your claim is even stronger - that anyone who doesn't learn that way has a learning disability?

I think either version is far too strong a statement.

Regardless I think it's trivially true that one learns by doing primarily or possibly exclusively. When I think of all the practice problems or "think through implications" that I have to do before being competent enough to claim i know something... Let alone my first attempt at applying the knowledge. That's all "doing".