Today I happened to be at that same place just when a Voi distributor, on cargo bike, was there. All the distribution is, of course, contracted out, and can be done by cargo bike, van or even on a Voi. He, of course, said that if the scooters were left blocking the pavement or cycle lane it was users who had done it, because the distributors are given detailed instructions with a photo of exactly how it should be. In his case, as he was on a bike, I'm inclined to believe him. Not sure whether I'd believe it of all them.