I’ve had my jaw fractured by a cyclist who knocked into me due to not paying attention. I now have an ugly scar because of it.
There’s all kinds of obstacles in cities. Including hundreds of thousands to millions of people. I can tell you from experience that a bike going into you at 30-40 km/h will hurt.
It’s not at all unreasonable to be against people pissing about on their phones while cycling.
The issue is compounded by cyclists who ride through pedestrian areas, cyclists who seem to think red lights don’t apply to them, and people getting electric bikes and whizzing around effortlessly at a high speed.
Bikes obviously have their place. For the time being, so do cars (although cities could certainly benefit from being less car-centric).
The operator of neither should be pissing about on their phones, both for their own safety and the safety of others.