Before I go further, I am a true believer that exotic cables are just bling!
There is a lot of presumptions and if's in your argument.
- No one has established that differences can not be heard, assuming it is a given, is foolish. as
human nature goes, both sides of the argument claim vistory. Perhaps we should involve the Supreme court !
- again, assuming we can measure everything, what we can not measure does not exist and we understand the measurements fully is another bone of contention.
Measurements are just tools aiding designers, they are just certain
indicators, designed based on some scientific assumptions (mostly valid). but lab measurements do not
indicate everything. I am not knocking measurements as
@bfreedma correctly points out, how else a designer test his designs. we choose what to measure and what not to, based on our assumptions, some valid, some imaginary, some damn right foolish - but never completely.
This whole argument shows how religiously polarized we all have become!
remember, belief does not prove God exists, science doesn't prove he doesn't!
For me I am happy with my exotic USB interconnect that I skilfully put together myself !

Made from top quality twin shielded cable (salvaged from my leftover junk pile), hand soldered under a quality magnifying glass.
https://www.head-fi.org/threads/diy-cable-gallery.71148/post-15939991
Sounds as good as any £2 commercial cable, under blind test!
Means I had my eyes closed listening to pink floyd with them.