Reward Systems: One vote, one party

There's something that bothers me about the reward structure for a summer class, described over at play this thing.

I'm not quite sure what it is. I'm thinking that it's the complete lack of choice - that point systems can act like voting - and you vote/collect points for what you want. But a 'set' system - it's like a one party system, but the more you vote for them the better off you are.

Not sure I like game systems that promote monomaniacle behaviour. It really is all or nothing. You can't sway the sysem - your either a devote, or you leave it entirely.

Not commenting there, so as to reserve the cynicism a bit.