I suspect there is a bit of a compounding effect with renting the scooters (more prevalent where I live), which makes users less respectful. Or a novelty effect with teenagers rushing past on their new toy. In my experience that wears out fast, though.
I guess even here some forget that you can put the scooters on bike lanes :)
It is tricky to get someone to recognise that they aren’t knowlegable enough. Even if you say it as gently as possible, some will still hear “you’re dumb” and no one likes that.
Also it’s a great tool to manipulate people : “I don’t need a scientist trying to explain me life from the depths of their lab !! I have commonsense !!”