This has been a longstanding issue with Boeing military aircraft, esp the tanker.
I met a guy from there who got in a similar situation to the guy at the end of the article.
He kept finding so much debris he wanted to bring the problem up with senior management. They wanted him to sign off on things he did not feel were safe, because their program was behind schedule. He thought putting things in emails would protect him. He got fired instead.
There are a bunch of guys from there on another board I’m on.
One said “I don’t recognize the place anymore”. All their values are gone, morale is shit, nobody cares about anything.