@shac That makes sense, right? If you say you floss after every meal, and they choose to believe you, and your teeth still aren't doing great, their only choice is to conclude that something's wrong which can't be solved by flossing. If you say you never floss they can offer that as a simple* way to improve teeth health.

*I mean it's simple in theory but not in practice, my unused pack of dental floss has been on my desk for a few years after a dentist recommended buying some