Think of it this way...what if driver stopped in a desolate or dangerous place and said get out. Once the Trip has started and passenger is no longer where they started or in a familiar area, some will feel uncomfortable just getting out.
That said, I agree...we have the right to ask them to exit our car, the 'how' is important too, however. I've never had to do what I see on these videos. Only Cancelled once on a passenger after she got in the car...and that was before Starting Trip. I've been lucky some, but careful more.