You seem to be giving a LOT of agency to writers for the stories they tell. Some stories are going to be something writers worked hard on wanted to write, and in those cases ya they should be blamed for the resulting flaws, but many times they are constrained by the instructions they’re given.
To go back to the metaphor, did the worker decide that the stuff you need goes out of your reach or are they putting it where they were told to?
“Just following orders” absolutely does excuse bad writing as long as it’s not harmful. I wouldn’t get mad at a writer of a thing a studio ruined just like I wouldn’t get mad at a grocery store worker for rearranging the shelves for the fifth week in a row. Just because I don’t like it doesn’t mean doing a stupid and pointless job makes them a bad person. If the writing is racist or whatever, sure, they’re complicit, but writers have to eat and it’s not morally wrong to write a boring script if that’s what your boss is asking you for.
The problem is, nazi is a political ideology, but Russian is a nationality and ethnicity. I agree with your point about gay nazis, but would you say the same thing about gay germans?
I am under no circumstances saying you can’t criticize art or say that the writing was bad or whatever you seem to think my position is.
Writers can and do get fired for not doing the job they were hired for and rarely get to lead the creative process (and usually if they do they’re like, writer/director, or a big name). All I’m trying to say is that a worker can do a good job within the bounds they’re given and still have the result be terrible because the bounds were terrible.