Having said that, the benefit of learning how to make music first is that you understand the underlying principles of the thing. For example, let’s go back to our fiction writer. If he looks at another novelist’s work and the structure of the work, then he is beginning to see how the thing is made. This is entirely different than what goes on in the classical music world where a performer can read music, but does not know the principles that go into it’s making.
Learn piano the easy way first. Learn how to first improvise, then compose your own music. This skill is invaluable even if you do read music because you begin to see how the thing is made and once you can see this, your appreciation of it will increase tenfold!