One scientist suggest that it’s because of the stimmy scrapy sound the wheels make against pavement. “The sound is so stimmy that it’s like the siren’s singing to pirates. It’s dangerous and it lures people in and they have the urge to stim more and soon the urge is replaced by a need and then other things happen too, like motor skills lessen, social skills vanish, eye contact becomes impossible. It’s because they were drawn in by the sweet stimmy sounds the skateboards makes,” the scientist explains.
There’s even a stimmy song called Kickflip by Owl City with skateboard sounds in it that is performed by Adam Young who has Aspergers you can listen to the song here