It's easier for us to the see the dynamics of the game, benefiting from a post-mortem editing. I imagine that within the game itself, it's harder to see the full inner workings of the many alliances and promises and lies that are being cast about.

Cochran last season was pretty sure he was #6 in his alliance, tried to make a move and ended up in a worse position. His mistake was making a move too early; so it's hard to revile the current contestants for waiting until they think they see a better opportunity. Hindsight is 20/20.

I actually think this discussion is valuable for spoiling, although it may belong more in the editing thread. There's definitely a reason that we're being shown more of Kim's strategy and not the other players'. I don't think it's because the others aren't strategic; I think it's because Kim's either works (or works better) or is significant in her fall.