I was reading a ZDNet blog where the author argued that point.
It was interesting to me how some people totally missed the message. As they didn't feel the need to downgrade, they thought that no-one should downgrade.
Some people can downgrade some people cannot.
Me for example, at work I used to develop, I required all the CPU and memory I could get.
Now, I am a systems integrator, connects to servers. Do project opportunity assessments, proposals, architecture diagrams. I just need as much RAM as necessary to keep open 10-15 applications. CPU does not matter that much. I'd rather have a lighter computer that I can carry to meetings and presentations.
My children are in University: Science. What they need is portability and long battery life. They carry netbooks. They each have a 23" monitor to hook up for when they are at their desk.
Of course, were they in Graphics or Computer science their set up would be very different.
It was funny, when we bought one of the netbooks (i3 with 4 GB DDR4). The guy at the store was lying through his teeth trying to convince us for a larger model: "With that computer you'll barely be able to use the Internet". He didn't know my son and I knew better.
My dad? almost 80, has a Quad core with 4GB and lots of HDD as he likes to do photography. To go to the country club, he takes his netbook and he is happy as long as he has a wireless connection.
My Mom? She is a computerphobic. She just needed a computer to email some friends but didn't want to go into my dad's den to use the desktop. I got her an old Dell C610.
At home I have an older P4 desktop. It has lots of expansion bays, and several HDD. CPU solow, memory, 1.5 GB. It does not matter, It's for storage, media server, casual browsing and preparing my presentations.
I mean. Different needs, different computers. Not everyone needs an SUV, not everyone can get by with a compact.