Passenger looked like he had a pretty good set of muscles on him, too.
I was the overnight cab driver for a while back in the 80s between real jobs and the word was if a passenger didn't have an articulable destination and kept you wandering around, to watch your ass. He might be looking for a good place to rob you.
Some folks do want to just "drive around" without malicious intent, but the further word was to keep the dispatcher aware of where you were and which way you were headed.
I don't know how that might work with Uber drivers nowadays. I think they're dispatched by cell phone.
But from the prima facie evidence in the full video, I hope the passenger gets his suit tossed out on its ass.