Heartstopper: A random pedestrian literally jumps in front of my motorcycle and a bunch of cops appear out of thin air(dead serious) to annihilate me on the spot. I also can't use any cyber abilities on spawned police forces.
This is supposed to be cyberpunk, not the matrix.
The system is extremely terrible, yes. But your mistake was that you stopped and checked if he was okay. Guess what happens, regardless of wanted level, if you just floor it? Since cops spawn behind you and can't drive, they're left in the dust and a few seconds is all it takes for your wanted level to disappear. The cops are still spawned for a little while, and if they see you then they will kill you, but once they despawn, your crime will never have happened.
GTA3 did this better, but that's 2020 for you.