I was giving my wife a detailed explanation, because she thought I ought to buy the MBP and I said until I know for sure the keyboard won't fail, I'll not buy it. She has a better understanding, though she doesn't think I ought to buy the razer. I was having a few issues with that before returning it. Not defects but usage, for instance the keyboard backlighting does not illuminate the secondary values of the f-keys and numbers, so in a dimly lit room, its harder to see what key to press for certain values. On the plus side, it does have f-keys
Personally I think they probably have fixed the keyboard, but cannot say so openly as that would confirm there was something to fix in the first place and they will lose all the court cases.