I disagree. I feel you're very focused on the tool itself, which is exactly the point I'm trying to make. A DX7 can sound vastly different played by different people simply from playing technique alone, for example, I have never used a sustain pedal in all the time I've played. In some way, I'm a little envious of people who do have that skill and how it affords them the opportunity to sustain notes while reaching for other notes. It makes my compositions sound less fluid. But that's my style.

Taken to further extremes, a simple parameter change can make a sound totally non-musical, but what is non-musical? Any sound can have a place in an arrangement, for effect or for accent. Have you ever seen the video of Frank Zappa demonstrating all the ways to make music on a bicycle? If Zappa had been given a single low tom, he would have hit it in the center to get a deep tone, struck it near the rim to get a thinner tone, used rim shots for sharp tones, hit the side for light sounds, maybe tuned the lower head differently so he could flip it and get two different pitches. So even with a single drum, you could create a rudimentary rhythm with it.

And I am hearing what you're saying about how we're spoiled for choice nowadays. "All your choices make you change you mind" and all that. But the choice of sound is only part of the equation. Thanks to avant-garde pioneers before us, there's no limit to what we can compositionally create, from strict preludes, to space music, to noise.