Hmm. I don't know whether you edited your comment or I misread it, ..

You can be sure I had a moment of panic on seeing your reply that I had written 'believes' instead of 'disbelieves', but no, on checking, I saw that I had really written 'disbelieves' after all. :)

the monotheist believes [ .. } the others that people worship are false gods.

The atheist believes that all the Gods that people worship are false gods.