In general, the points are OK. Small detail which the author got wrong: According to the now famous Prism slides, Skype was a part of that program before it was sold to Microsoft. It seems that MSFT engineers didn't need to change the architecture just for that feature.
That also proves that the end users can't assume that they can get any idea when some company starts to be the part of such a program, even if now everybody likes to feel smart and more secure in his abilities to spot the difference: "look it was the architecture change."
That also proves that the end users can't assume that they can get any idea when some company starts to be the part of such a program, even if now everybody likes to feel smart and more secure in his abilities to spot the difference: "look it was the architecture change."