As such, LEOs are taught to NOT place themselves in the path of a maneuvering vehicle and to not shoot at a moving vehicle.

Which makes enormous sense. Haven't seen the video, but this is just basic physics. If you shoot the driver of a moving vehicle, it almost certainly will keep moving. If you're standing in front of it, you'll get run over. Get out of the bleepin' way. Even if you somehow manage to shoot out the engine, the vehicle still won't suddenly stop.

As an aside, and this may be way out of date now, but it is my understanding that you do not have to answer any questions, nor get out of the vehicle unless you're being detained/arrested (in which case they have to inform you of that before ordering you out of the vehicle). You still don't have to answer questions, but I believe you do have to exit the vehicle if the LEO informs you he/she is placing you under arrest.

I learned that decades ago. May be out of date. I have had very little interaction with LEOs in my life, fortunately.