"Move fast and break things" is a way for immature and arrogant people to mask the guilt they should feel for offloading their poor decisions and planning to the end user.
Arrogance is spending twice the time perfecting a product that you come to find nobody uses.
I'm not necessarily an evangelist of "Move fast and break things" but it's a good mentality to speed up the feedback loop and avoid sinking a lot of time into stuff people don't want (even if it's really well engineered).
