I mean I think the distinction between "goods that are not wanted" and "goods that are wanted but are not affordable" is a significant one, but if you want to stick strictly to the terms of art in economics, then yes I suppose you're correct. And I didn't mean to argue his point, but rather to reinforce it. If goods, when they become cheaper, suddenly start moving again, then the goods themselves aren't really the issue.
And I mean, this is exactly 100% my experience currently. Our sedan could use replacement, it's about to hit the 200k miles mark, and given it's primarily used by my wife for inter-town transit, I would happily buy her an electric car, but a new electric car is hopelessly out of our reach financially. And I make six figures!