Spoken like someone who never played wotlk and are speaking through information given to you by your casual baddies sorry I mean buddies.
Was it accessible? is that why it was so successful?
First kill titles, titles only one guild per server can get.. seems pretty 1% to me?
Black and plague protodrake, required every naxx raid achiev including undying/immortal and was removed when Ulduar came out(5months) - Seems 1%?
Ulduar - Legendary that few casual guilds were able to finish, Hardmodes that few casual guilds ever cleared, Yogg 0 an achievment few hardcore guilds even killed and mimirons head a mount few people still have to this day. - 1%?
TOGC - Immortal achiev and mount, still to this day only 0.06% of the WoW playerbase have this achiev and mount because how hard it was and because it was removed at the end of wotlk. "Reach Tribute Chest with 50 attempts remaining and without allowing any raid member to die during any of the boss encounters in 25-player mode." If you don't believe me look it up this achievement and mount is almost as rare as the AQ Gate mount. 1%?
ICC -Was gated and Required the raid to release a 5% buff every week for people to be able to clear it, capping at 30 %. 30% wasn't enabled until August and Cata came out in December. Even with a 30% buff no casual guild killed H LK, Invincible still to this day is a rare mount few have. 1%
I don't even mention the multiple rep grinds the expansion had or the yellow proto drake, YOU'RE RIGHT this expansion was CLEARLY accessible to all because it introduced the group finder...... LOL shut up casual, if WOTLK isn't buffed it'll die in a month just like the others cause Blizz listens to your crowd.
The reason WOTLK was the pinnacle height of Blizzards sub count is because it was the only MMO that was heavily focused on both PVE and PVP that was being updated at that point and the only other options were shit, so you can delete your non sense about it being popular because it was casual.