I learned to cook mostly from books--reading, then applying the text. I ... didn't learn GMing the exact same way, but my GMing improved substantially after setting out to do some reading about it--and then applying things in games I was running.Certainly. My point was that writing is not the best medium to communicate how to cook. This may be analogous to games--we depend on written game products, but actually sitting down at table and playing with people with experience is actually the best way to learn.
Is a book the best way to learn to, say, chiffonade basil? Nah. Is a book a good way to learn to put flavors together, and to learn the sequence of a given process? Yeah. Does having someone to ask questions of help if you're a new cook (or a new GM)? Absolutely, but it's not mandatory.
As for the OP's analogy, I think that whether you enjoy a given home cook's food comes down more to whether their tastes and preferences match yours than to their technical skill; and I think that whether you enjoy a given GM's game comes to the exact same thing.