Earlier quoted context omitted.
No. He DIS believes in one more God than a Monotheist. The Monotheist believes in one God (usually 'Yahweh, or 'Allah' or 'The Trinity'). But he disbelieves in all the Roman Gods, the Greek Gods, the Hindu Gods, the Persian Gods, the Aztec Gods, etc, etc. Let's say, for the sake of argument, that our Monotheist disbelieves in 205 'other Gods'. Our Atheist can disbelieve in 206 Gods, one more than our Monotheist disbe…
Hmm. I don't know whether you edited your comment or I misread it, but I was sure you said "the Atheist believes in just one more God than the Monotheist" The difference though I think is at the core: the monotheist believes in the concept of a god, they just believe the others that people worship are false gods . The atheist doesn't believe in the concept of a god at all.
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.