We can't be sure if the "experts" have listened to everything. For instance, Donald Tovey said of Beethoven's Missa solemnis:
"There is no earlier choral writing that comes so near to recovering some of the lost secrets of the style of Palestrina."
But look at "Missa in Dominica Palmarum" (1794) [...]
The earliest generation of "experts" neglected X, then the next generation could also, then the pattern continues, until X falls more and more into obscurity. I'm just saying it's not an impossibility.
What do you mean by "extensive knowledge of music", if a person calls himself an "expert" of C.P.E. Bach keyboard music, for example, but cannot pass tests like [
50 Unidentified Excerpts from Carl Philipp Emanuel Bach Keyboard Sonatas]- would you still consider him an "expert" in matters regarding it? What you're suggesting might be
"blind submission to authority." [...]
It doesn't matter how many of these people there are, they still won't know. Isn't this
common sense? You know the Bible even without reading it? A person who has read the Bible 10 times carefully has greater chance of knowing what's inside than a person who only skimmed through it once.