At home I'm the architect, my wife's the raccoon. I don't actually believe that you can stack the dishwasher wrong as such, but you can make it hard for yourself to unload, if you don't sort the items correctly.
Dishwasher physics matter. But I would never criticize a person in my family for loading the dishwasher the "wrong" way; I just sneak in and reorganize when nobody's looking.
This is the way. I am just happy when someone else, anyone else, actually puts dishes in the dishwasher.
There are definitely more and less correct ways, but personally i think it's "wrong" to load it in a way that leaves the arms blocked or (not) tilt pieces that get excessive water pooling on top
You most definitely can, they're not magic! The water must hit the right spots and obviously stacking three plates without any space between leads to stuff not getting properly cleaned.
If you try to teach a kid to put the dishwasher you'll learn a ton of wrong ways of doing it! :)
I read our dishwashers manual and was surprised at the significant amount of detail about how to position silverware for optimal cleaning (e.g. where to place small spoons, where to place forks, where to place large spoons, etc.)
I learned a long time ago that the ability to recognize and exploit a structured system is the most emotionally satisfying thing in the world.