Sure, but the number of those people should become vanishingly small over time.
HN is full of web developers rolling unnecessary username/password solutions. The fact that this is such a hot issue - as opposed to esoterica like TCP frame size - shows that far too many developers are homebrewing solutions rather than outsourcing.
I agree, but "outsourcing" includes using libraries written by people who know what they're doing. (And not using libraries written by people who know what they're doing, but which are the wrong tools for the job.)
HN is full of web developers rolling unnecessary username/password solutions. The fact that this is such a hot issue - as opposed to esoterica like TCP frame size - shows that far too many developers are homebrewing solutions rather than outsourcing.