Agreed completely. First time I had to fight him with one healing statue left, so I had to lure him on one side of the arena constantly. He's hard enough without the healing statues, FFS, why would they give the last wedge after you don't need it anymore? Stupid.
Except the game pretty much tells you it's a good idea to destroy those idols, in fact, that it's necessary to destroy them all.
Still no reason to give the last wedge after the last boss. Hell, my friend didn't explore as well as I did and missed one of the statues, so he destroyed every idol around the boss area. That's just asinine.
At least they fixed the exploration in the third DLC, as someone said.