Yes people in wheelchairs and scooters wait in the same lines as everyone else for most attractions in DW. A few attractions have alternate wait lines part way through the regular lines. In many cases these lines are longer because you are waiting on a limited number of vehicles to cycle through or you have to wait until the number of handicapped people hits the right limits to get on an attraction.
This whole article and subsequent news stories are misleading and full of not even half truths.
Also other threads on this have already been started and closed by Mods.
I suspect the original company just wanted more free advertising!