That has nothing to do with it.  We are not looking at the electronics offer and demand.  We are looking at the supposed driving force behind a deflationary spiral if ever there would be a mild deflation: namely the idea that people will not spend NOW to buy something at price X if they simply have to wait for TOMORROW for it to be at price 0.95 X.

If that idea were true, people would not buy expensive computers now, because they can have a better one for less money tomorrow.  They would not buy smartphones now, because they can have a better one (often cheaper) tomorrow.
The expansion of the consumer electronics market and the high turn over in that market proves that the "it's cheaper (and even better) tomorrow" doesn't stop people from spending now, at least in that particular case.  In the food market it would be evident: you're not going to starve today because bread will be cheaper tomorrow.  But in that most frivole market of consumer electronics, it is not true either.

So, if food, and the biggest market in the world, consumer electronics, are not exhibiting the postulated general property of "if people know it's going to be cheaper tomorrow, they will hoard their money today" then the evident truth of that postulate may seriously be questioned.

And it is at the basis of the "deflationary spiral" theorem: "a bit of deflation will make some people postpone their spending to get things cheaper tomorrow, which will induce even more deflation, which will make more people postpone their spending, and so on, until everybody stops spending and waiting for better prices tomorrow"


As I pointed out, the deflationary spiral is the dual of hyperinflation. 
Because exactly the same reasoning holds, in the other way: a bit of inflation will make some people spend today what they planned to buy tomorrow, as it will be cheaper today.  That will cause even more inflation, which will make more people spend today what they wanted to spend tomorrow, and so on, until everybody wants to get rid of his money today in a frenzy, which is hyperinflation.