Motivation can be an issue for a writer if not on assignment. It’s possible for a writer not on assignment to be extremely motivated, but it’s also possible that a writer not on assignment is unmotivated to produce their own material. But the writer with a strong level of entitlement is a storm force.
The way something’s written can disguise any sort of attitude, agenda, and intent. Back in the Golden Era of Hollywood, some writers could carefully hide their beliefs in the script. The censorship of the time didn’t allow them to express something in the open. Today, carefully concealing a thought, attitude and belief is a tweak of a word away. Just say something a little more palatable than crude or more obvious.