The tournament is a test and the netdeck is the answer key. If I can take the time to make a deck to win with, so can everyone else. So because I don't it, I can call it cheating. That's not fair.
Stacking is cheating because you're doing it with the intent of cheating. Declumping is not cheating because all you're doing is just moving cards around so you can make the deck more random when you shuffle. There is nothing wrong with movie cards around the deck during a search.
I am going to refrain from going COMPLETELY berserk because there is a chance you may just be a 11 or 12 year old and you don't quite understand.
First of all, the definition of cheating is not "things 'vaporeon' doesn't believe are cheating." Netdecking is an unfortunate reality of the internet, but there is not much you can do about it beyond withholding your own deck lists. It is also an unfortunate reality of business, thanks to SixPrizes (who understand there is money to be made off the demand for lists).
Stacking not cheating because you do it with the intent of cheating - it is cheating because it puts a player at an unfair advantage. If a player tells a judge, "Oh, I had no idea it was illegal!" the judge isn't going to say, "Oh well in THAT case there is nothing wrong with what you did!" Ignorance of the law is no excuse, etc.
Here is your syllogism:
Premise 1. There is nothing wrong with moving cards around the deck during a search.
Premise 2. Declumping is defined as moving your cards around the deck during a search.
Conclusion. There is nothing wrong with declumping.
Logical, but unfortunately not sound due to the fact one of your premises (Premise 1) is incorrect. There IS something wrong with moving cards around in your deck during a search because in no way does it make a deck MORE random when you shuffle. Do you understand what random means? I know when you draw a hand with 1 tepig, 3 fire, and 3 junk arm there is a natural inclination to think, "Well, that's just not random!" Guess what - it is! A random deck does not mean that everything is perfectly spread out at all times.
How is this difficult to understand?
How is this even a debate?