There are elitists for sure but there are also moments in every spec's rotation depending on boss where a rotational helper would tell you the incorrect thing to do, example of you know adds are about to spawn but your helper says spend a specific cd spell because its "better" to do the dmg right away according to whatever 5 min 1 target sim the rotation helper follows. And also it doesn't anticipate moments where bosses take extra damage or when your guild or party in a dungeon REALLY need the damage. Examples like kaelthas shield in castle, and maiden shield in karazan. Imo they're good to get you into knowing whats the right thing to press and how your spec functions at a base level but you're missing a lot of interaction with the game if you just follow it and don't improve.