the real competition for bike paths will be for normal unpowered bikes and slow pedal-assist ebikes competing with fast throttle "ebikes" and electric scooters/mopeds.
The fast bikes are still not fast enough and safe enough to ride with cars, but too fast for regular bike paths, so what will give?
The role those fill isn't that different from scooters, which are common in a lot of places. The traditional solution is to let them crowd the road, slowing car traffic and incentivizing using more scooters and other vehicles better able to navigate the congestion.
I am genuinely sincerely in favor of this. It's inelegant but effective. Driving a car should be more frustrating and uncomfortable than it currently is in the US. Giving slight advantages to slower, non-car road traffic can improve safety and increase the costs of driving over other options, which is long term good.
The fast bikes are still not fast enough and safe enough to ride with cars, but too fast for regular bike paths, so what will give?