You say this, but most people plan to build a new computer in a few years, but that turns into several. Buying a computer that's less archaic then will lead to better lifecycle performance. It's neither cheaper or more efficient to do it this way, but it's typical consumer behavior.
I guess? If someone treats a PC as an appliance rather than a set of components that is probably a solid argument. That said, people using that philosophy would be the same people who bought discrete physics cards and 3d monitors in an attempt to get more lifecycle out of a gaming pc. Higher end systems frequently come with a lot of soon obsolete and useless tech.
____________________________
Disclaimer:
To make a long story short, I don't take any responsibility for anything I post here. It's not news, it's not truth, it's not serious. It's parody. It's satire. It's bitter. It's angsty. Your mother's a *****. You like to jack off dogs. That's right, you heard me. You like to grab that dog by the bone and rub it like a ski pole. Your dad? Gay. Your priest? Straight. **** off and let me post. It's not true, it's all in good fun. Now go away.