Critics in the past-have they been right all along?

In a very non-objective and slightly rude article from Citizens Against Government Waste, there was information on the funding that is being spend towards the rainforest. Apparently, the authors believe that money should not be spent on the rain forest with their quote, "Ultimately, this project will do nothing for Iowa’s population, energy industry, or the environment, but it will soak the taxpayers."
Readers of this article will leave believing that the project's succcess will only result in high tax increases. If Iowa's taxes would in fact increase, this is definately something the project officials and coralville legislatures need to discuss with the citizens because it could make a huge difference in the way the project is supported.
It would also be nice to know the reasons for such negative criticism on the project. It seems that there is no clear distinction between the pros and cons, and a place to find such information is nonexistent. It would be nice for an official or legislature to come out and say "Look, here are the benefits, and here are the problems with the project, bottom line, we need funding." This could definately end some debates with progress. Citizens are tired of waiting just to hear whether the project is feasible or not.