I see what you’re thinking and it’s logical in one way.
But – it’s assuming that they’ll only say something if there’s a problem. It’s the “Silence=Yes” problem. Everything’s fine if nobody’s complaining. But… …nobody likes a complainer right? So, there’s ALSO a good chance that they’ll say nothing because they’re not supposed to complain. So…. it’s a tricky one to get right 100%.