Mastering a tool technically is of interest to people that are interested in technical qualities...sure.I'm not one of those....I am not even sure you know what that means! I mean...a quality of noise in an image can be a very desireable texture. How would that relate to this idea of technical excellence?
There are times when a certain amount of noise or other artificial texture added to an image either by the recording medium or by tools in Photoshop can be a creative enhancement. I do it myself on occasion; I even posted a thread in the Digital Image Processing forum describing a simple technique for doing so in conjunction with upsizing to prevent pixelization and other obvious "digital" artifacts when upsizing an image. But that does not mean that noise or film grain or any other artificial texture is alway a desirable artistic effect, any more than HDR, selective color, toned B&W, partial desaturation, hypersaturation, local contrast enhancement, soft focus, shallow DoF, sharpening,
film noir lighting, motion blur, or any other creative effect is appropriate for every image. All of these things have a place in a photographic artist's toolbox, but insisting that any one of them is always desirable in every image is simple-minded.
If you're creating an image that can be creatively enhanced by artificial texture and a low degree of sharpness, by all means break out your Voigtlander or a Holga or whatever and have at it. But if the subject already has interesting texture and detail, obliterating it with artificial texture is not always the wisest or most artistically creative choice. I prefer to make such decisions on a case-by-case basis based on the creative intent of the image, rather than blindly accept what I'm given by a technically inferior piece of equipment and tout that piece of equipment's technical shortcomings as a panacea for artistic superiority.