Sounds like you just have typically woeful management incompetence. Whilst working for an electronics company (involved in manufacturing microwave communication products for space/defense and cellular communications) a group of the production staff where brought into the offices by the quality control engineer (a nice enough lady who liked plastering the productions area with lots and lots of Excel charts ) to be told that the company had shipped millions of dollars (UK sterling) of components, that when the isolators were installed in the cellular towers would overheat and fail within a minutes after being powered up at full power. The fault was a tracked down to the batches of 50 ohm load (100W) resistors manufactured by another electronics defense company.

Anyway as the meeting progressed the quality control engineer was talking/implying that the issue was a failure of the production team who manufactured/assembled/tuned the isolator and circulator devices. It was actually quite a funny attempt at passing the buck, which failed miserably, when the one of the production team asked the direct question, 'Why did YOU let $2 Million worth of kit out of the door, without power soak testing the units using statistical process control?'. The meeting ending shortly after that question was raised.

Even funnier was when I suggested that the load resistors might dissipate the heat from the failing load resistors into the heat sink body if the production engineer would allow us to use some heat sink compound, only to be told that the surface finish was smooth enough not to warrant the use of heat sink compound. 2 weeks later we were using heat sink compound!! Problem apparently solved but of course guess who gets the credit.

And to think these folks sent kit off to NASA on be put in their comms modules for their spacecraft for their Mars and Jupiter space missions.

I left the company soon after being restricted (or escorted) where I could go on the premises after a holiday to Cuba.