Chicago Lakefront.
You're creating a hard and fast rule that X group should always be allowed, the parent was saying all groups should behave reasonably towards each other.
I think the parents view is more reasonable. You could still take the view that bikes will always be dangerous to children, at that point you can then decide whether to prioritise children or bikes.
if you got kids at the park, you'd imagine bikes as being a nuisance. If you're the one riding the bike, you'd imagine the park is meant for you to enjoy and thus the boke isnt a nuisance.
This is exactly the point being made by the questionaire!
Bikes riding fast in parks and murdering children does not happen anywhere at any significant scale. It's a made up fear, just like the "stranger danger" of the past.
Anger at cyclists for driving fast and breaking laws is an emotional response to feeling jealous that bikes are zipping past them while they're sitting there waiting in traffic for 10 minutes at a red light.
How often do you see motorists get pissed off and honk at other motorists running a red or yellow on a left hand turn? They want people to break the law in that instance but will honk at cyclists for the most minor of transgressions. That's all they proof I need to conclude motorists don't give a shit about the law or safety (the classic I just want cyclists to follow the law because if they don't I can hurt them and I'll have to live with a guilty conscience! defense) and care more about reducing their travel times.