As soon as he backed into the cruiser on dashcam, I really don't see any way that ending well.
I saw at least two moving violations in the span of 15 seconds. Backing that trailer into the cruiser would generally be counted as assault with a deadly weapon, so application of force is "end the situation" at that point.
The problem with these cases is the police have attempted to carve out large categories where they can do anything ("they feel threatened") and that's unacceptable. They are licensed to carry guns, they need to use discretion.
Driving your car at high speed into a police car in an attempt to hit them is different than a fender bender at 5 miles an hour in the real world. When I have a fender bender and the car in front of me stops too suddenly and I hit them (happens 1000s of times per day), you don't get to shoot the person who hit you because it was "textbook vehicular assault". And it shouldn't be different if the other car was driven by a policeman.
"Yeah, he's getting shot."
Scots Police Teach US Cops How to Avoid Gun Use: https://www.youtube.com/watch?v=v8qa5Wk_f7U