Realistically, I doubt your dishwasher is comparable to even an iPod (original). Then again, an iPhone (original) probably has more RAM, storage, and processing power than any NeXT computer, much less most systems that run Windows 95. We'd allow someone ask about Windows 95, right?
I still think the distinction has no underlying technical clarity, unless you think that you can cleanly classify an iPod as not a computer and an iPhone as a computer, when they have so much common technology.
The reason I came back to this meta thread was because someone had an iPhone (the computer to some people), but they could not get it to charge in some docks. The answer is related to the history of iPod hardware (which the Firewire vs. USB power charger transition). This question was closed, but shouldn't be open, because this is a technical problem with making a "real" computer work? And then if you did open it, then the same question, about an iPod nano 4G, would be closed, even though it is exactly the same problem, with the same answer...