You think you are arguing against me, but in fact, you help make my point. You describe what I said was required for the population to call it a computer, and then say that it is a computer, and you say that if it isn't that, it is a 'smart' appliance.
So, by definition, a computer cannot be an appliance, because as soon as it is, it isn't a computer. If it can be, then they are all over.
We have computing devices that run from incredibly simple clocks to mainframes, and everything in between. There is a point in the shades of gray that we draw a line and say that anything on one side of it is a "computer", and anything on the other is an "appliance".
Is a laptop running an ARM processor with a display screen and keypad a computer? What about a cell phone that is running an ARM processor with a display screen and no keypad? What about a desk phone running an ARM processor with a display screen and a keypad?