I had a Priest friend of mine describe the sort of person you’re alluding to here. It is the sort who, when driving around at night, happens to drive over a pot hole, but who comes to Confession in utter terror that they’ve run someone over, despite getting out of their car and checking, despite all evidence pointing to the contrary. It is the sort who insists that utterly mundane things, like not turning off a light if they’re not in a room, like not looking up and down the street four times before crossing, must be mortally sinful, even if they’re constantly told otherwise.
Your advice applies to that sort of person. But to mix up that sort of person with someone who’s asking perfectly natural questions that we all have to sort out is just not fitting.