I think this is related to the concept of "different levels of wrongness." someone who says "2+2=4" is correct. Someone who says 2+2=5 is incorrect. But if someone else says 2+2=35, they're far more wrong than the person who says 5. Someone who says "2+2= Cat" is so wrong they are no longer talking about mathematics anymore. But then there's an answer like "2+2 = 22" which is also very wrong, but could indicate that the person doesn't understand the concept in question at all(in this case, addition) but is still trying to give a sincere and honest answer.

When talking to people who believe nonsense, we need to figure out how much nonsense, and how different from our own interpretation their understanding is. We shouldn't assume we have things right, the goal should always be to get "less wrong" and to help others be "less wrong."