Blame the environmentalists, its the shitty solder. Got a customer who is an engineer, I fix his PCs, he fixes my electronics and you have no idea how many times he has popped the back off a device of mine just to find tin whiskers.
So IMHO its a perfect example of how the "we have to DO something!" mentality nearly always leads to failure, as they got rid of lead in solder to "protect the environment!"....only to end up creating fricking mountains of e-waste because gear that before would easily last a decade is now lucky if it lasts 3 years thanks to all the shit solder shorting everything out.