How is it subpar? Just because it is aluminum does not mean it is any less well-made than nickel or whatever your poison is with water cooling. You're talking about a piece of equipment which is primarily a heat sink and which has to double as a water block. The thermal efficiency of aluminum is better for its primary task than traditional water cooling materials.
You have no idea what the craftsmanship is like on it. You have not ever even seen it in person, much less used it. Reserve your baseless judgments.