All I read from that is that the iMac is for people that can't figure out how to plug a monitor into a computer.
Seriously, they could just release the monitor as a Cinema display and give people the option of what module they want to run with, be it a Mac Mini or a Mac Pro... or even just an Apple TV.
Then I am afraid you did not read it right.
What I said is that I live in a country where people have no idea of what a resolution beyond Full HD is, since nearly all monitors are low end. I had difficulty finding a DisplayPort cable for sale, because they are generally not available. I could find cheap DisplayPort cables which were capable only of 1920x1200 resolutions, and HDMI/DisplayPort cables which can display only 1920x1200. I knew exactly what I was looking for, and what I needed, I just could not find it. And I live in São Paulo, which is a large city.
Also, I am a very busy guy, and I have no time to spend looking for computer parts. I have work to do.
An all-in-one may be a given in some situations. Imagine you live in the countryside in the rural area of a poor country, where you just cannot find all the computer parts you could easily order on BestBuy. Suppose you could find the Mac mini or the Mac Pro but not the Cinema Display... or the other way around. You would just love the possibility of buying an all-in-one and having nothing else to worry about.