This is similar to what I experienced. There seems to be a heuristic in the brain that sees a human-like object and immediately starts trying to superimpose other human-like qualities on it. It's almost like an optical illusion where the brain totally misinterprets a visual cue, but in this case it's perhaps more like a social/empathetic/mirroring illusion.

I'd argue closely related to the Uncanny Valley: https://en.wikipedia.org/wiki/Uncanny_valley

It is very interesting. I think our brains are just so incredibly fitted towards interpreting entities whose shape and movement is life-like as intelligent, purposeful agents. Even-moreso if they are human-like. You could give just-so story that this was very important for survival in our evolutionary history, which is a fairly compelling idea.

I wonder if the question of whether we are alone in the universe will be resolved first by us making bipedal AGI.

I figure that’s probably what I’m imagining when I see theee videos.