I was updating my old regular builds, some of which are years old, and I got the MOO cheat alert for a number of them. Except, I built them myself and I never use that cheat. Ever. In the entire lifes...
I said this already... Move objects on is ok. Having it on all the time, not good. It basically allows objects to get closer and/or overlap. Usable objects, be careful with this. "Useless" decoration clutter, not a worry.
I've seen this with great builders that made a lot or room that have a dozen windows in exactly the same spot. So on all the time = not good. On sometimes to place objects = good.