And also "cars bad" too. Lots of people making left turns across the bike lanes without checking their mirrors (probably happens once per thirty minute ride), people executing half a left turn and then blocking the bike lane to wait for pedestrians, people parking in the bike lane. It's been 20 years since I had a car wreck so I can be reasonably sure when I put my kid in their car seat that it will be an uneventful trip. City biking is always at least a little eventful and there's a lot less protection though. If society has given me a nice lane to ride the bike, is it still society's failing that my fellow occupants of the lane act the way they do?
But it isn't. End of story.
Happy to support people who want to make biking safer. Happy to support politicians who want to build protected bike lanes.
But you can't just make up a fairy tale land and pretend it's safe. Bring yourself back to real life, and your children are in danger.