Personally, The dim backlight for the keyboard is fine for me, doesn't distract from the very active screen ...
Some of us would like them to be viewable. Here is mine, bottom and my friends top. Mine is worse than his but in a dark room at least his keys are more viewable yet there both well below that of the 536HP. The camera picks up the light better than the human eye. In person you have to really stare to see the keys.