I don't think "careless" is a permanent, intrinsic attribute of a developer. It's something they learn to be, and it can be unlearned. We respond to incentives

I don't think "careless" is a permanent, intrinsic attribute of a developer. It's something they learn to be, and it can be unlearned. We respond to incentives. If a developer's only incentive is "we reward shipping as fast as possible" then they will carelessly ship slop as fast as they can type it. If that incentive is removed, they can learn a better way...