>The fatal impact from the cooler
I’m reasonably certain the cooler didn’t kill him.
Nope, not the cooler, it was the tree that decide to stop him abruptly. In the video you can see where the larger cop pulls the scooter off of him, then he stands up abruptly and does a quick 180 turn. My guess is that his noggin was less intact than it was prior to meeting the tree.
Correct. The perp died of stupid.
If you didn't commit a crime, don't run from the cops. Let the lawyers sort it out. If you DID commit a crime - same.