Did you guys read the whole article. It was a well intentioned group that decided to make the reef. It wasn't just a way to dispose of tires. They had to go through junkyards, etc. to get them in the first place. Recycling tires yields more money than throwing them away.
The only problem is that the tires shift around too much in the tide and break up the corals, they aren't heavy enough. It was a good idea, it just didn't work. I agree they probably should have tested it with a few thousand tires to see what happened instead of moving ahead with 2 million.
I don't think it's environmental groups that are wanting to clean it up either. It is in the best interest of the state to do so. More reefs = better fishing = more money from tourism, etc. The navy is doing it and using it as practical experience for naval divers.
10g Heavily planted - 1 mating pair of Apistogramma Cacatuoides "Orangeflash" and a whole lot of MTS