So tell me how a cyclist doing 50km/h colliding with a walking pedestrian differs from a car coming close to a cyclist with only a 10km/h speed difference.

fwiw i don't have an issue with cyclists who obey the road rules and are courteous & ride safely. I ride occasionally myself.
I do have a BIG issue with all the fucking self-entitled cowbows on bicycles who think the law doesn't apply to them and they can do whatever the fuck they want where they want.
Same with drivers - drive sensibly, Be aware of your surroundings & no it's not your fucking road.