everyone organises their room. just some people use different organisational schemes. it's a travesty that one particular type of scheme (empty floor, stuff in rows where it's nice to look at and hard to use, not much dust, etc) has a monopoly on being called organised or orderly. esp when it's not even all that great a setup. it's pretty impractical.
on the flipside of the coin, a lot of children could have better-organised rooms, and would enjoy it that way. but the solution isn't to go in there and move stuff around (mess it up even more), it's to not instill cleaning hangups in your kids.