Cars and bicycles are two completely different things, and should have different rules governing them. A car is larger, deadlier, and takes longer to stop than a bicycle. A car going 40-50 kph is traveling with far more force, and won't be able to stop as fast as a bicycle traveling 20 kph.

It's like saying cars and planes should follow the same rules. Or even better, cars and semi trucks. There are highway speed signs that state one speed for trucks and one for everyone else. Or certain roads where trucks aren't allowed to drive on. We already have a tiered approach to motor vehicles, it should extend to bikes as well. Blanket approaches don't work in our modern world when we have cars, bikes, ebikes, escooters, etc all sharing the same space.