Unfortunately, this is a thing said about quiet people like me. We kind of just hide in the background, not wanting people to see or notice us. Then people think we're creepy, just because we're not saying anything. At that point, our attempts at not being noticed kind of backfire, because then everyone notices how creepy we are. I haven't worked out the secret of talking just enough that you're not considered creepy but not so much that anyone actually notices and wants to have a conversation with you. This is why I tend to just stay home.