Now, yes. (At least, from what I've heard, it's been a few expacs since I've played it myself.) Back in Wrath, they got complaints of going too casual and making Heroic dungeons too easy. Then in Cataclysm they went the other way and made them too hard. Then in Mists the dungeons were overall more accessible, but they took the cap off of daily quests, so people were accusing them of forcing raiders to no-life it to get all those enchants and crafting recipes they'd need to optimize. And so on. It swings around depending on who's in charge and who you listen to about it.