They're not doing the pitch any favours but look at what it was like before they turned up and invested in it (for themselves as much as us). I was on the pitch (in disguise!) against Doncaster a couple of years ago. It was even worse than I had realised from looking from the stands. You could count on one hand how many blades of grass there were in each square yard.
I'm yet to watch a game but may do at some point. No difference from me going to watch them or watching Arsenal v Chelsea/Man City/Man Utd is there?