it looks like this person walks quite directly towards the nest camera. Given it was dark they located it very quickly. I think that suggests they knew where to find it - either they’ve seen it before or been told where it was positioned. You don’t see the person scrambling to locate it. They seem to know it’s rough position even with their head pointed down when approaching the door.
Disabling it is another matter however…
Disabling it is another matter however…