The whole "getting augmentations makes you lose your humanity (soul) bit by bit" thing doesn't show up in any of the foundational cyberpunk novels. In fact, it doesn't show up in any cyberpunk novel I've read, and I've read a fair few.
I'm fairly sure this is a purely tabletop-world concept that has wormed its way into other media a little bit.
I don't know how much people realize this when discussing the genre.