I'll freely admit I'm loud about it because people saying "can't" to mean "won't" or "shouldn't" is a pet peeve of mine. It's misusing language to elevate personal decisions to logical imperatives ("I'm sorry, I can't come to your party"), or moral grey areas to moral black and white ("Facebook can't sell your data to other corporations!").

It's misleading and it shouldn't be used that way. Can't be used that way, even...