I mean, those are literally the laws for Chicago.

That doesn’t mean people obey the laws. It’s like cars with speed limits, or trucks with weight limits, or noise limits on vehicles, or any other number of things that are regulated but not regularly enforced.

It’s hard to enforce a lot of regulations, including a speed limit on an electric bike. Especially when it can be sold as an electric bike where the limit is only digitally set and you can just turn the limiter on/off. But any sort of other regulation on motor size is gonna be equally silly. A motor that can go 30 mph for a 100 pound woman might only be able to go 20 mph with a 300 pound man carrying deliveries.