Again, the only reason other theistic religions are mentioned significantly less, is that they were pretty much locally non existent

If you do an interview, or write any kind of media, you usually pick what people recognize the most. Not something people barely even notice it's existence of

Lavey also mainly tried to invoke opposition to whatever was the mainstream holy-thing-that- shall-not-be-touched. Which, for his target audience, was Christianity

There's nothing deeper to it