Oh, I totally know that...Yes, but that's not all a car is. Cars are cultural artifacts, commodities, and aesthetic objects (to only state the most obvious). Same with computers. Besides, form is not separate from function, and often pleasing forms end up being used more/better/more efficiently. So computers can look good, and it's perfectly fine to talk about which computers, according to various opinions, look the best.
The poster I quoted was ridiculing someone who basically posted the equivalent of "I use my car just to get to work. It's just a car. I'm not too concerned with how beautiful it is. Toyota Camry FTW!"