Obviously I was being facetious and that is my point. Since we aren’t going to ask what are we supposed to do? and I honestly don’t know how you would know what the norm is. I guarantee you that the large majority of guys who wait in the car don’t purposefully do it to “check out” a girl. It’s either for tzniyus reasons, they feel it’s awkward, or they think the girl doesn’t want to be walked in herself (or at least doesn’t know). Nothing sinister.
I don’t think it’s being sinister. I think it’s just natural that the guy will watch the girl make her way to the door instead of staring at the wheel. If you do that, great. And again, I will never say no to a guy just because he doesn’t walk me to the door. However, it’s something I would prefer.