Here’s a good uk electronics co dogma story for you then……
I went in to a job where 4 previous contractors had been unofficially “press-ganged” out of the job…..because none of them had been able to fix a not-working PCB….the PCB was a 600W current source buckboost converter. The schematic was so messy, that nobody saw that there was no open load protection, so when the pcb was powered up on no-load, its output would go into overvoltage and blow the FETs….(it was a 4 switch bukboost using LT8705)….HOWEVER, THIS happened silently as the bench power supply had overcurrent limiting, and so there was no bang………the fets were QFN type and only one person in the whole company was allowed to replace them, and he often took a week to do the replacement………leaving it behind his other jobs…..he would always go round his chums and tell them that “another dumb contractor had blown the fets up again”. That contractor would then get his tyres let down in the car park etc.
In another co, an engineer refused to take a small , simple PCB into production because it had 3 badly overpowered chip resistors, 3 badly overvoltaged ceramic caps, and a BJT/Zener/resistor linear regulator which would drop out at 12vin because the base resistor was too high value, and the pic that it supplied would just not get powered.
This product went into production and within 1 month, virtually every product of the 3000 shipped came back failed.