Seeing as a lot of newer games claiming the RPG title have long forgotten the whole "role play" part and focus on just resource management and cookie cutter quest chores, I'm not surprised that kids are failing to grasp a game truer to the point. A good role playing game is like an interactive novel, the story and literary character development are the driving force of the plot and often the world's changes. More modern titles pick up the mechanics that were used to speed along one of the more tedious and dull conflict resolution systems: combat. An enjoyable RPG has nothing to do with the heavy math and genocidal power grinding that's focused on in many a title these days. Back before there was any voiced characters there was text, so reading everything, from dialogue to the easter eggs of world lore, was mandatory.
It's also kind of laughable to compare World of Warcraft to any RPG, as the characters' actions have no in-game effect on the world around them. Millions of people have raided that dungeon, slaughtered those hundreds of species of creatures just because an NPC asked them to (with pay), and who knows how many have put down the epic threat of the Lich King and seen the world stay exactly the same as it was since the day they started playing. Who your character is in WoW is also completely irrelevant, there is no character development, you don't really gain any kind of reknown or uniqueness no matter what you do (excluding out-of-game pop culture icons).
Now, that's not to say that there have been many, many wonderful innovations to the genre and others. Letting the software track tasks, important information, auto-map, and even save the player time by pointing them in the right direction have been god-sends, especially in consideration of added game play length, three-dimensional worlds, and the diminished free time of game players turned adults. Notable downsides in the genre's 'progression': lack of non-vionent solutions to challenges and tasks, complete irrelevancy of npc dialogue (doesn't matter when you don't have to think of a solution or pay attention to details like directions or landmarks), and artificial lengthening of gameplay through grinds (level/power, money/resources, reputation, etc).