I don't know what the culture is in prosecutors' offices but it seems they have lost touch with common sense and the real purpose of their work.
Only one of those two drops the blight of a criminal record onto someone's future.
What we as citizens can do is demand that elected officials hold DAs accountable for their wrongful convictions.
Way to pass the buck. In 47 states, district attorney is an elected office, not an appointment. If we want better behavior from district attorneys, we need citizens to be better at monitoring that behavior and holding them accountable.
E.g.: have a retrospective sample of cases analyzed and ranked by independent reviewers; punish those deemed unreasonable; reward those deemed reasonable (explicitly regardless of the law at hand).
Better yet, fine lawmakers that voted for laws involved in the convictions. Doesn't have to be a lot.
Good luck with that ;-).