No, that's exactly like just buying BTC and not spending them.
If you spend them for another BTC-producing asset is irrelevant relative to BTCUSD.
I accept your argument that the btc:usd rate doesn't affect return. However, the cost of entry to the product has lowered, making it affordable to more people. I would expect that to drive sales up.
Imagine the corollary. If btc:usd went up to $1000, a blade would now cost $49,990 cash price. How many do you think AM will sell per week at those prices?
I see your point, and while it
does make sense, I don't think it weights so much.
I guess that this kind of "market" would auto-adjust, and if the price of BTC would go up too much, people who wanted to spend less would just either buy a minor product (i.e. USB miner) or buy shares such as PTs or virtual mines.
So, yes, sales could be slightly affected by such a thing, but not as much as someone might imagine.