Either I'm misreading the community, or he is.
I got burned out and left WoW, after 3 years of leading a raiding guild, because frankly the content never slowed down, and made the game a perpetual treadmill.
There is no time to enjoy the content, because they barely give regular guilds a chance to do it before they start nerfing the difficulty and pushing a new raid out. I got severe burn out, and left. There were times in WotLK where we wouldn't even wear epic gear for a month before we were replacing it with newer stuff. There is no valley, just an unending uphill climb.