The important point is "it's a problem", which the engineers obviously didn't foresee, which is unforgiveable.
What's unforgivable is hiring inexperienced engineers, not those engineers being blamed for something they weren't aware of.
I'm seeing this a hell of a lot recently, people being hired because they tick a certain box rather than their expertise and experience. At the moment I'm dealing with 4 projects, three of which are run by young girls no older than 28. They mean well, they're hard workers and they've got qualifications but some of the things I have to explain to them are quite alarming.
A perfect example being the removal of a redundant condenser for an AC system, she was going to instruct her guys to just take it down and dispose of it, she had no clue about Fgas regulations. I shudder to think of the things these girls have done without knowing.