What would drive me crazy is pointing out code that _clearly_ did not do what it was supposed to do and get back, at best, a shrug. I think I'm pretty open minded on most tech topics -- I started with PHP! If the code works I'm happy, everything else is gravy! -- but to have people insist that, no, this is fine and, yup, being on-call with services guaranteed to wake you up at 2AM at least once during your rotation and our stakeholders sending nasty grams once a month is just normal... crazy making.