I don't think it is really. AiG was not established as a charity to feed the hungry. They don't state that as one of their goals. They're no more due criticism for not devoting their money to ending hunger than any other corporation is.
Besides, if they did that then they wouldn't build their ark. I'm looking forward to it. Should be funny.
Sorry, they are not just another “corporation.”
They hang a lot of what they do on promoting Christianity. That brings with it a set of responsibilities that secular corporations do not have. They are indeed due more criticism if they cannot or will not do appropriate levels of funding for a project such as this.
Like I said upthread, a project in the tens of millions of dollars seems to me to be wasteful.