what's the point?

i am a huge fan of spurlocks 30 days series and i am a big hater of his "i bet you will" MTV show that totally contradicts what he does with his more or less documentations. the problem i have with this movie is that his point gets clear after 25 minutes: xmas conusmerism is bad. after that it's just repeats and re-repeats so it gets pretty boring and annoying. i have a similar problem with his movie "oversize me". i can see very interesting points in his 30 days series, but what exactly is the point of his movies?