I find situations where I feel someone else "needs to be forcefully briefed on their ignorance" are situations where I likely don't have the rank, influence, or audience to improve the situation anyway.

I don't really subscribe to Kant-style categorical imperative thinking or defeatist attitudes, but in this case I've always made better progress changing an existing bad thing by being "demure" and accommodating. I might have agency to change things, but if an group of others have have agency to keep it the same, failing to cooperate is counterproductive unless I entirely opt-out or leave.