Exactly. Look at Skyrim. They gutted and dumbed it down to cash in. Don't know why you'd be upset about an MMO to begin with.
I think people are upset because of a few things:
1. The design, when people imagine a TES MMO they probably think of a standard TES with multiplayer.
2. They worry about the single-player games (even though they shouldn't)
3. They feel that this is even more mainstreaming of the game.
4. They feel like the franchise is selling out.
Not my opinion, just what seems to be the general opinion of those that are negative.