No, they're not right about it.
I completely agree with you that making the computing experience simpler, more like poking buttons on a high-end blender, is what most consumers need. Satisfying what most consumers need is most likely what the companies need. The companies have as much right to want what's best for themselves as I do. They're not doing anything wrong, IMO.
That does not automatically make their design decisions a reflection of their superior knowledge of what's good for me, even "kinda".
Linux-like customization on top of Apple-quality hardware/driver foundations in form factors like the iPhone, iPad, MacBook Pro, and MacPro, would be what would be good for me, but I'm not saying anybody owes it to me.
I am thinking, though, that as the two major personal computer platforms become more closed, it gradually opens a market for some savvy company to go in the opposite direction: targeting those who want more customization, not less, without sacrificing hardware quality.
If that ever does happen, that will be what's good for me.