"Zero Tolerance" usually translates as "A Policy Invented by an Ass-covering fucktard".
Opinions, I've often been told, are like Assholes: everyone has one, they all stink, and they should never be heard in polite company.
I've also been told that Assumption is a bad thing, too, for when you assume...well, you know the rest.
Fortunately, I've never been one to agree with "Conventional Wisdom", and could give a flying whizz at a rolling donut about "Polite Society".