He doesn't lack faith in his game at all. He says it's worth the pricetag, he just wishes he had the funds to take it further.
This is just my opinion and its his right to feel what he wants and all, but he should be happy that the game has gotten very far despite its limitations rather than to say he's not happy with it and say that it could be better if he had money.
The reality of the situation is that even if he was given the freedom, the funds and the team to create the game he wishes to make he would likely be disappointed with it. NOTHING ever comes out as envisioned, and as George Lucas and Steven Spielberg have taught us, just because you can make something "better" it doesn't mean it is.
Besides, that's what sequels and projects are for; to implement ideas that couldn't be used the first time around.
And frankly, I find his restrictions sketchy. Indie gaming has been known for pushing ideas that no publisher would ever dare release, and if the premise behind Steam and WiiWare are to be believe, this is the perfect playground for small developers to push their work without any major restrictions.
Money, limited resources, small development teams and time constraints are understandable issues, but those can be solved with creative management.