I think there are valid reasons for wrestling fans to complain about The Network. If the most important thing to you is watching current WWE, then no you probably don't have much to bitch about outside of maybe the fact that they don't do immediate replays of Raw & Smackdown. But if you really just want to see old wrestling they have in their library like Mid-South, AWA, Florida, St. Louis, you can certainly complain that it looks rather unlikely any of that stuff will be seen in the near future.
I'm already spending money on stuff that I am actually seeking out to watch so I don't want to also spend money on something that I barely remember i have and when I do bother to watch end up getting annoyed at the fact that the player stops working once you skip around so many times. Which is only made worse by the fact that very little of the stuff has bookmarks, or bookmarks that work on my PC.
Oh, absolutely, but it's also still in it's infancy. It's quite unrealistic to expect all of that stuff to be available already, if ever. I'd love to see weekly AWA and Mid-South, but they never told me that I'd get that when they started the Network, either. Unless I missed something. And those of us who do care about that stuff are a niche of a niche, so I understand their lack of action on it.
I like current WWE and feel like I more than get my money's worth even if all I watch in a month is the PPV, so I doubt I'll ever cancel when it's so cheap. The technical bugginess and whatnot does suck, but again, this is still early in something that is a long-term thing. It's not like the Network is going anywhere.