You seem to not understand that this expansion isn't even half over yet...or maybe you do and are just an idiot.

1.) The underdelivered (Isn't a word btw) on a heavily-hyped expansion?
Taking from the WotLK Trailer:

Death Knights? Yes, they've delivered on them. People seem pretty happy with Death Knights. There are balancing issues, but what game DOESN'T have those when introducing a new class?

New continent? Yes, they delivered on that. And incredibly at that, the landscape of Northrend is ridiculously amazing looking.

New Profession: Inscription? Yup, delivered on that. Inscription is here and its...well...a profession.

New hairstyles? Yup, they're in the game

New Dances? Not yet, but they're working on it. Not that I really care about them that much...

New Quests? Yes, yes, and more yes. The quests in Northrend are the best in WoW so far.

New Dungeons? Definintely. Beautiful looking and fun to play. (I'll hit on the raids in a minute)

New Monsters/items? Yes

Level cap raised to 80? Yes

Seems like, according to their trailer, they've already delivered every promise except 1. The dances.

Lets talk about end-game raiding for a moment.

Its incredibly obvious that raiding right now is easy. Blizzard THEMSELVES have admitted this. The reasoning also makes perfect sense. Burning Crusade pushed the raiding limit to such an extreme that only an incredibly low percentage of the player base got to even see Sunwell. They purposely tuned down Naxx, not only because they wanted more people to see it (Since, like Sunwell, such a few percentage of players got to see it), and because it's an entry-level raid. Was Karazhan ridiculously difficult? Maybe before the necessary-nerfs, but no, it was not.

Then you have to take into account that Naxx was tested for an incredibly long time. Players were given complete free-range to the instance during the beta-phase. The tuning of the instance is not the only reason why it's so easy. Its because players had been clearing it on the PTR for weeks before the game even launched.

Raiding is a walk-through? Perhaps after you've got Malygos and Sarth 3D on farm (And have the gear from them), but I guarantee you didn't walk through Sarth 3D when learning (Probably not even Malygos).

Now for your second point: Blizzard took action against a company that had a produce that explicitly went around the rules to give some players an unfair advantage. It's their game, they make the rules as to how it is played. Having a mod that farms FOR you/ect is not fair to everyone else. I don't even see how you can use this for your argument against them.

I think you need to calm down and wait for the entire expansion to be finished before you start slinging your mud. Ulduar isn't out yet and then there's patches 3.2 and 3.3 to look forward to.

The POINT of those "pointless achievements" is to push people into doing odd and/or different things while the new content is coming out.

Frankly, if I was Blizzard, I wouldn't care WHAT someone like YOU thinks, you're clearly still playing the game. And they're getting their 13 bucks/month out of you just the same.

And finally, if you have such a problem with the game, there's that time old saying of "If you don't like it, stop doing it."