No, you overlooked that the stylus did not compose and record the music. You are right that an expensive cartridge is generally better sound quality. But it has nothing to do with the source of the recording.The needle is not stupid. And it is not simply creating an electrical signal. It is creating sound, as well as acting as a transducer.
When I pull out my violin and play a solo fugue by Bartok or Bach, I sure hope you don't call me stupid.
We can get into a discussion on different philosophies of music ("arrangement" genres like classical and rock, and improvisatory music like jazz and some avant garde), but that is for another time (and place, most likely).
I view my tonearms as colleagues, analogous to me recording myself performing written music. In fact, I have learned more about my bow arm from working on tonearms in the past decade, than any viola guru or treatise.
It is better to skip the whole analog manufacturing that introduces distortions and such limitations.