I both agree and disagree.
I don't worry much about power. I don't care about ultra-high settings or my games looking better than consoles. I want my specs to be near recommended levels but I don't worry much about them beyond that. I care a lot more about performance than graphics.
However, when you say that the focus is on the wrong place, I think you're giving way, way too much prominence to those few who do go all out in terms of power. They might be the most vocal group but they hardly represent all PC gamers. In fact, I'd probably guess that people playing on out-dated PCs far outnumber those with state of the art systems. Look at all the free-to-play games out there, all the indie games and bundles. There are tons of them and many of them are selling very well.
There is nothing wrong with people who love playing games at ultra-high. It's as valid as any other form the hobby takes. I think it would be wrong and misleading to say that they represent most PC gamers, though. They're just one small fragment of the whole, which is actually incredibly diverse.
