I agree, it is overly simplistic, but it was aimed at making people think about their purchase more than anything else.
Going to have to
Yes, the lack of an easy* RAM upgrade on the MBA and rMBP is annoying. At least the upgrade cost for RAM is more reasonable than it used to be. The Macseawolf Today, 12:22 PM
That whole infographic thing is correct but the monitor thing is a little OTT. Yes, you can easily double the price for another 6".