General Discussion

Never argue with a man whose job depends on not being convinced.
It is difficult to get a man to understand something, when his salary depends upon his not understanding it.
It can be very hard to understand something, when misunderstanding it is essential to your paycheck.
It is rather pointless to argue with a man whose paycheck depends upon not knowing the right answer.

https://quoteinvestigator.com/2017/11/30/salary/

It can become appropriate when grift and graft are part of the paycheck.