What are we objectivists missing?

To return to the OPs question. We can't identify if something else needs to be measured based on subjective listening claims. Bias has to be eliminated first.

I don’t care what you and John Doe discuss about subjective impressions. I do ignore it

That’s clear 100% for the "care" part. But, not so sure about the "ignore" part. You seem to reply to all threads on these very "subjective impressions" topics, cables, DACs, you name it. Majority of your 5,000 posts are replies to these threads. Not really ignoring them for some reason, they seem to bother you.

Some other people may, just may, however, be interested on John Doe’s subjective impressions.

Oh... and keep using "claims"

Hear what you hear and love what you like.

  The definition of objectivism is the philosophy or theory that the main objective of the human experience is to pursue personal happiness and respect other humans. An example of objectivism is the philosophy made known by author Ayn Rand

I am happy that we are almost on the same page about that...

My best to you ...

Good experiments use trained and untrained listeners. I agree with  a lot of what you say about audio, not all. To me 90% of what we experience is room/ speaker interaction and how we've tuned them with either passive room threats, EQ or both. As long as your electronic system is competently designed and most is, not specifically made to have a sound signature it's  no more than 10% of it, and yes, that's only my opinion.

Wow. Two shoutouts for Ayn Rand who did not write about respecting other humans. She was the forerunner of Gordon Gecko (greed is good) and promoted selfishness above all else.

She admired serial killer Willian Edward Hickman so much that she modeled her protagonists in her books after him. She saw him as above all others and not tied down to societies laws and precepts. A superman, as she said.

All the best,
Nonoise