It shouldn't matter whether it was shared or not. It is manslaughter.
If I drive at and end up killing someone on an electric scooter because I've decided they should not be on the road then I deservedly get tried and convicted for manslaughter. I may not have intended to kill them, I may...
Views like the one you are responding to are the cause of such horrible events. Normalising murder/manslaighter because a cyclist was involved. Unbelievable.
Perhaps he read that the pedestrian may have had autism, hence leaping to their defence.