but at the same time, he doesn't need our BTC since he seems to have more than we do, and he's got nothing for sale that we could pay in BTC.
Well, if that BTC-denominated digital music distributor is still in business, you can still by a copy of my CD for 1.2 BTC. I'd even accept 1.2 Segwit coins for a copy.

Aren't you undermining your own argument when you are seeming to give the
EXACT same value to legacy BTC and segwit tainted coins? Would you like to specify (or correct yourself) further here, jbear?