I'm going to be level with you here: it sounds as if you're being dishonest.
> Huh. Sounds like almost any other religion.
I preempted this comment and you ignored it. No, it's not like any other religion, because "Brights" is not a "movement" of atheism (unlike say Catholicism for Christianity) because the Brights just happen to be a group of people who happen to be atheists, and have no major influence on atheism nor are they any kind of authority over even a fraction of atheists (nor do they claim to be). They don't prescribe anything over atheism nor do they hold any authority over it, not even a tiny fraction of it.
More importantly, atheism is not even a religion. Yes, I know you are going to claim this (it's your angle, and it's best if you admit it early on. No point hiding it. It's been attempted and refuted thousands of times before, so let's get on with it).
> This is incorrect. Agnosticism is the lack of belief in a god. Contrast this with atheism, which is the belief in the lack of a god.
You are wrong, but that's splitting hairs anyway. Before we go down this rabbit hole though, best get back on track and examine your assertion that there's an atheist "historical fiction". You haven't spoken one word about this, and instead got sidetracked into pointless distractions.
> There's as much an Atheism movement as there is a Christian, Muslim, Hindu, etc.
Do you want to argue honestly? I know you don't believe this. You can make a (mistaken, in my opinion) argument about atheism as a secular religion, or about atheist "beliefs", but no-one will seriously consider atheism a movement similar to Christianity, Islam, etc.
If you want to be taken seriously, make serious arguments. Otherwise you just come across as dishonest.