It is actually difficult to dislike Ungod since nobody is certain what Ungod is like. This also makes it difficult to put much thought into Ungodism. Or Aungodism. I tend to think in theory I must be an aungodist because I believe Ungod does not exist. But I have no idea what being an aungodist is like since if Ungod certainly does not exist there is nothing tangible to go on.
I tend to think it is more sensible to identify as an Aungodist rather than an Aungod2ist. There would obviously be infinite non-existent gods (including Ungod2 and Ungod3) I could identify as not believing in but I would tend towards some kind of generalisation, requiring a generic Ungod. But if I identify with not believing in Ungod then it could be construed as very specific to Ungod, not to Ungod2 or Ungod3. Perhaps I should identify as an A<ungodx>ist. I guess for that term to get traction we need to simplify it to Aungodxist. Not easy to say. Auntheistxist is no better. Perhaps I best forget this Aungodism thing as a non-starter. It works better with a real god to not believe in just to get a bit of traction and give it some meaning.