They certainly can be. But if they are mocking paganism, it is only because they want to illustrate that there is no functional difference between polytheism and monotheism. Or as I often heard it put, "Once you understand why you believe in one god instead of three, you will also understand why I believe in none instead of one" or something along those lines. So while it elevates polytheism, it also identifies polytheism as irrational, because monotheism is also irrational.
One caveat: Not simply anti-theist most of the time, but anti-supernatural. Notwithstanding exceptions like Sam Harris, there's not much love for dharmic concepts like karma, samsara, rebirth or reincarnation, etcetera.
Oh, I'm very familiar with that attitude. Good post.