The debate surrounding tunings like 432 Hz is not solely about asserting one as inherently "better" than another, but rather about exploring the potential physiological and psychological impacts of different frequencies on listeners.
The consideration of different tunings isn't about dismissing the composer's ability to create emotional effects but rather about broadening the spectrum of tools available to enhance the listener's connection with the music. It's about offering a unique perspective on how musical frequencies can interact with human perception and wellness, leading to health benefits (potentially).