"Never attribute to malice what can be adequately explained by stupidity" has led me astray so many times in life I've come to largely disbelieve it is a useful mantra. It lets bad actors hide behind stupidity and cause chaos on purpose, while good people let it happen because "it's simply accidental, right"?
I think it is slightly more nuanced, in that bad decisions get made on accident and overlooked on purpose. If you want to sabotage something, put lots of people that make many accidental mistakes on a project and put your people in a position to overlook them.
