really? im not saying you are wrong, just asking how you got this info? did you look at the service manual? I can understand the AV system is redesigned but dont you need to still have the parking brake applied in order to show video on the front screen?
starting from the 2008 armada/qx and well into the 2nd gen qx, the same system has been in place. nissan added a gyrocompass in the head unit but still tapping into the VSS wire and grounding the parking brake still worked. now across those years the wiring harnesses have changed a little bit and even the color of the wiring has changed, but the same process still worked.
but with the added infotainment features it is possible nissan changed up somethings. if you can get access to the 2019 service manual or 2018 qx one you can for sure find out the truth.
So I yesterday I figured out that while disabling the VSS speed sensor input to the radio in order to watch DVDs on the move, works. It does disable the automatic volume increase based on your speed. I noticed this when i flipped to switch back and forth while driving on the highway and listening to music. Everytime i turned the VSS signal back on, the music would get louder again. I guess that makes sense, but I have never seen anyone mention this before.