That hasn't always been the case. Many of their products have been extremely functional -- and even repairable. Have a look at the inside of a PowerMac G4.
But they get into this weirdness where they produce a well-designed functional product, people like it, they assume it's because of the design and then produce something else that sacrifices function for design, then act confounded when people don't like it.
They've skirted the line many times while also frequently releasing great products that combine both. The apple III overheated because they didn't want to put a fan in it for aesthetic reasons. So did the original Macintosh, alright to a less problematic degree.
I honestly don't understand Apple's apparent disdain for more than one mouse button though. The OS and apps support extra buttons, everyone knows how to right click by this point, what's the benefit? At one company where I worked everyone had a MacBook, apple monitor, apple keyboard, and a white Microsoft mouse.
Technically the trackpads have had zero buttons for years now. It's all haptics and pressure sensors. It's a major step up from the old method, since you can reliably click anywhere on the pad. (They also support a hard-press gesture, but not many applications use that out of the box.)
