It's a pointless debate. An idiot cyclist kills girl.. let's put him in jail for 5 years for being an inconsiderate w**ker, the girl may or may not have been inconsiderate herself, but she has already suffered enough, so make an example of him.
I have the same hard line for motorists, regardless of if a girl walks out straight in front of you, if you kill, you should never drive again and go to jail for 5 years.
A motorist chooses to take charge of 1.5 tons of metal zooming around town at up to 30mph, this is a super dangerous activity, as anyone can see it's asking for trouble. Would you put some lines down the middle of a childrens playground and allow cars to drive through at 30mph? No? Well a street IS a children's playground.
I would just ban cars from towns outright, afterall they've caused more deaths since 1945 than all wars and confilcts put together.
So, if you choose to take the risk of driving then you should suffer dire consequences if you 'accidently' kill someone. Zero tolerance for KSI will help train motorists to be super careful.
As for cyclists, it can kill too, so be bloody careful, or face certain jail.
However if we are debating wether pedestrians and cyclists can safely share road space, just as long as cyclists ride slowley and with consideration for pedestrians, of course they can.