The fucking up of Fitbit and the rewriting of Wallet are not the engineers' fault. These kind of projects are mostly decided and planned by PMs: clueless and incompetent PMs. For payments in particular it was not even just an incompetent PM, but an incompetent director that saw the success of the NBU Paisa payment in India and thought the U.S. would be the same.

The engineers are at most just complicit. Those who aren't are laid off or they quit on their own accord.