I think the parent comment was saying that the problem is not quantity, but quality.
Warping my mind back into a hobby-enthusiast music producer mindset:
an MCP that generates presets for a limited pipeline with many sweet spots sounds... interesting?
To me, the idea of being able to have, say, a chain of a simple VA synth + delay + compressor and a very simple step sequencer, combined with prompting and a genAI model that spits out patches, sounds very endearing and interesting.
Much more interesting than Gemini or Suno for example.
Depends on the training and input space of course.
I deliberately described a limited setup, the controls of which could be described in less than a kilobyte.
Many dance music synth patterns could be described by simple means (tracker/step sequencer, looping, a few knobs).
That's what makes a lot of music interesting.
I can easily imagine a producer creating very individual and interesting output by unleashing the right models.
I think, just like with human producers, constraints liberate.
An AI controlling a very limited synthesis chain is more interesting than a very complex synthesis chain controlled by a human with no musical "vibe".