... Back in the excellent Photoclub (Naestved, Denmark) I attended as a teen, some were deeply into Ansel Adams’ “Zone System” of exposure. I was a complex system of making sure that your photo had tones all the way from black to white, but still had detail all over. As a major voice in the club said about it: “it can almost make you stop photographing altogether.” (Of course it was much harder to control contrast with film.)
And indeed I have found it important to remember that as Adams said, the Zone System is a teaching tool, not an artistic tool. Once one has learned to control tones, then one is free to make other choices. For example I have found that sometimes blocks of pure black without detail is much more expressive than the Technically Correct way.
(Granted, I didn’t have much choice in this case, but sometimes I’ve had.)