Again, NO! Automatic downloads are NOT the default! YOU may not have had the willpower to resist the suggestion that you turn it on, but it is only a suggestion, not a default setting one has to change to off. This is not subject to debate, your statements to the effect that automatic downloads are the default are WRONG.
You can stop it with the "apparently" and the "technically" bullcrap, you are factually wrong.
Clueless users are legion, that changes nothing. Idiots run red lights all the time but that is no defense when one of these idiots runs a light & T-bones a mother & her kids. Neither is complaining that "Duh iTunes did it widdout mah consent" when that too is patently false.
Yeah, you didn't pay attention when setting up your iDevice & never bothered to look at "Preferences>iTunes & App Store", now accept the consequences for those acts of inattention & your consequent ignorance without complaint. Do NOT attempt to contradict those who do know what we are talking about. The two words Automatic Downloads followed by on/off controls for Music, Books, Apps & Updates are clearly beyond your comprehension level.