I'm sypathetic but ... unlike cars, bikes don't have large each to read license plates. People will scream about facial recognition. I'm not trying to take away your freedom. I've just wished they'd enforce traffic laws on cyclists but it's just not going to happen and cyclists know it so they almost all break traffic laws with impunity.
License plates do not seem to prevent dangerous and illegal behavior in cars, why should they help for bikes?
You know what happens when a cyclist is involved in a traffic accident they cause? They might get hurt or cause some minor property damage. When the driver of a car is at fault they kill other people, so I'm not too worried about even negligent bike riders causing an accident.
It's hilarious to see all the responses that are effectively "others break the law more!"
The license plate issue is that cities can, and are, adding more and more license plate scanners to catch cars. Those won't work for bicycles and ebikes (who drive like cyclists) unless they require license plates on bikes/ebikes and enforce. Yes, and enforce more on cars too.
Japan has bicycles with license plates. It's clearly possible.
You know who generally stops at a stop sign or stoplight? People on an e-bike, compared to people riding for sport or commuting on road bikes. It's not a big deal to stop and get started again when you have a motor. It's a pain in the ass when you're trying to make it to work on time with your legs.
Why is having a license plate even relevant here? Most traffic enforcement is done when an officer sees something happen.
Large license plates don't prevent cars from regularly breaking traffic laws. The percentage of cyclists who come to a complete stop at all stop signs and red lights is higher than the percentage of drivers who strictly follow the speed limit.