From what I have seen when the tools get better they use them to make better graphics, not to do the old ones faster

On point here, the article does say all games though I don't feel like that will be true, since they are saying a great deal of these are going to feature it then most of this multiplayer stuff is probably going to feel poorly done.
Oh I agree. Issuing a blanket every game policy will only ensure poorly tacked on multiplayer content to essentially single player games. As for SE developing more multiplayer content, it is probably a good move. Bad for me, but probably the right way to go.