Well I'm not suire that the article is so great. For instance saying that Hinduism could do without many if it's gods is like saying that Christianity can dispense with many of the angels - but that comparison is not made. So there is not even the attempt to make a fair comparison - instead polytheism is attacked simply for being polytheism.
Still I did find one thing interesting. The implicit argument is that Christianity does not represent a better way of life. Instead the important thing about Christianity is the acceptance of dogma. That seems to be a hollow and empty faith, with no real relationship to the Christianity I grew up with.