I totally agree with this statement, but
I think the number of people that ask for a room switch is very minimal. I also think being on the DIS forum and seeing everyone here talking about room requests, we get this sense that most WDW guests do that, and I believe it's quite the opposite. So, unless something is really wrong with a room, the majority of the people checking in keep the room they were assigned. Most of the friends/people I talk with about WDW did not even know you can put in room requests and barely used
MDE.