Surely no-one has the ‘right’ to ride their scooter in a supermarket, @Allfur?
If a kid on a scooter rams into my FIL, it would probably cause his leg or hip to break, because he has bone cancer there. That won’t heal, because of the cancer, and he will end up in a wheelchair. He is fiercely independent, and this will kill him.
Of course, he might get hit by someone on a scooter when he’s walking to or from the shops, but at least when he is outdoors, he knows there might be cyclists/people on scooters, and can watch out for them - I doubt he’d expect one to come flying round the corner in ASDA.
And yes, of course, he could do his shopping online (or we could do it for him because he can’t use a computer), but then he will end up stuck in his flat, with little or no human contact, feeling he has lost a big part of his independence - which would be bad for his mental health - and why should he, and every other vulnerable person, hide themselves away so that parents don’t have to say to their children “No, you can’t ride your Heelies/scooter/bike in Tesco” - and mean it!