First of, im not a Morrison hater I have enjoyed the majority of his batman run. I even enjoyed the batman inc series even though I didn't agree with the idea. But, the problem with batman inc is that it doesn't make any sense.
hare are my reasons:
1.its out of character for batman: batman is supposed to be an incredibly paranoid person who will go at every length to make sure that no one can potentially hurt the bat-family. why would bruce put his life as batman at risk by saying that he funds batman.
2.It makes his villians seem idiotic: Bruce wayne says that he funds batman, but most of his villians haven't directly tried to destroy him in order to get to batman. Realistically if a high level criminal found out that someone was funding someone who is a direct threat to him, he would eliminate that threat immediately.
3. Why would batman need to create a team of D-list heroes to fight Leviathan when he has access to the Teen Titans, the justice League, the outsiders etc.