Two things:
Never been to D-Land in Cali, but it looks like most of their queues are outside whereas WDW in Florida has a lot of indoor queues. Found that interesting.
I was taken aback by the two people on the Today Show expose that didn't feel any remorse or had a moral problem with what they are doing. I thought about it further and I think their point, although still kinda messed up, is that Disney offers VIP tours for anywhere between $315 to $380 per hour and the tour also gets you on certain popular rides without waiting in line.
They probably feel that they are providing the same thing a VIP tour provides, but at a much lower cost (one was $50 per hour and the other $100, I think) and someone that needs that extra income is getting it rather than a multi-billion dollar corporation.
What they are missing is the point that they are mis-using something that Disney happily provides to the people that should have it, the GAC. If the reason you got the GAC to begin with was for a temporary condition (hurt/broke your leg or ankle a week before your vacation) then you should have to return it at the end of your stay--or it's only valid for the length of your stay.
They do only give them out for the length of your stay (they have expiration dates), unless you are a passholder, then they give them out for longer, depending on the condition and if its temporary or permanent.