I second that.
Perhaps he is merely deaf.
Borges condescendingly replies:
Astonishingly misinformed.
From age seven through high school, I was taught (violin, viola, clarinet, and piano) by a wonderful music teacher whose former students include several successful and even renowned classical musicians. He was from Russia, Georgia, to be exact. He understood my utter and complete capitulation to all things J.S. Bach. Quoth Mr. Korisheli, my teacher:
"Mozart wrote lot of junk, Beethoven wrote lot of junk, but Bach didn't write any junk."
Still, Borges, all those years growing up and playing Bach, Beethoven, and Mozart on both keyboard and in orchestras, I'll tell you from my uninformed position that Mozart's stuff was generally repetive, boring, formulaic, predictable .. dare I say, vapid. There were exceptions, but not many. Beethoven, on the other hand, was never vapid, that I can think of. And quite a lot of it wasn't junk at all, but adventurous, risk-taking musical explorations that for the past 40-plus years have inspired me and filled me with wonder. Not quite up there with Toccatta and Fugue in D Minor, but very close. Mozart was a puppy playing safe in a fenced yard compared to Beethoven. Put that in your "informed" pipe and smoke it!