You can buy modchips online that remove the speed limit. I did this for my ebike which was limited to 25km/h. With the modchip installed it can go much faster.
I don't like it, but it could perhaps be fixed with changing the regulations. However, e-scooters are really getting a bad reputation in the media lately and that is probably not helping the cause.
Do whatever you want on the road, so long your ebike can withstand 50km/h. No way escooters can do those speeds safely.
Of course they can, but you'll eventually be killed by a car. People drive like shit and don't care if they kill someone on a scooter.
Also, 25 km/h vehicles are fit to mingle with bicycles on cycleways, whereas superior speeds belong on the road with the registered motorized traffic. Different beasts, different regulations.
And then there is liability and insurance - those are why the clampdown will happen fast.