The issue isn't with what people like or dislike in a game, it's about what people think they like (or say they like) and what they actually like.
This is the issue with WoW and why the 2pics were posted. Most people think they're playing a role playing game and that what they like is slaying dragons while in reality they like the Roll playing side of it.
On it's own this isn't very important (i like tetris u like pacman, big deal) the problem is when a game is released in somewhere in the middle of those two types ppl won't be happy.
A-net and GW2 was marketed as a Role playing game but is now slowly taking theroute of a roll playing game which upsets the Role pgamers since they feel betrayed.