Well it does argue against certain gods existing, like the Christian God, Islamic God, so on.
And I wasn't analyzing his personality really, but his nature (good vs. neutral vs. evil), and power/capabilities.
So I was arguing mostly against the archetypal God, that is powerful and benevolent. He/she/it is either benevolent but does not impact us and did not design the world, or is powerful and has little to no concern for pain, suffering, or fairness.
Sure, there may be some essence out there that randomly created the universe in a chaotic manner. But then why even call it a God? It's more just a driving force that has no concern for us and knows little about us. It has more in common with an Earthquake or Tsunami than it does with us.
It's basically impossible to disprove there is any God out there at all. But you can argue against 'certain' Gods existing. You can argue against the Gods humans claim as real, and argue that whatever God exists, it does not have certain traits.