But let me tell you what happens every time I watch the show.
When I see this character, I think, how weird to see a disabled kid on TV. Maybe things are going better than I thought. After this initial reaction, which takes about half a second, I remember that this character isn't disabled--he's lazy and geeky, and one of the jokes of his character is that he uses a scooter because he's too lazy to walk around. It doesn't really surprise me to see jokes about scooter users being fakers since that is an idea normal people are really in love with, but I am a little surprised to see it on a kid's show since it's just so mean spirited. Other times when I've seen something like this on a Disney show, I've looked it up and it looks like there has been some reaction--for example when they made a joke about someone having an eating disorder. But apparently even Disney is allowed to make jokes about people using mobility devices they don't need.
What always strikes me isn't the existence of the joke, but just the fact that this is the only kid getting around like that on the Disney channel, and probably one of the only ones on TV. More than anything else, the joke makes me notice what isn't there.