That is be.
but like you said he is a voice, and people follow
People who are interested in the subject follow his arguments. Most people couldn't give a flying fuck. Religious people however, are offended that his views are being expressed at all - that's what the fuss is about.
Aboigenisis is a belief that Atheists can hold.
Oh dear. Blue is a colour that atheists can like. Toast and marmite is a food that atheists can eat.
Look, atheism is the belief that God(s) do not exist. That's all - nothing else.
Abiogenesis is a scientific hypothesis on how life started. It has nothing whatsoever to do with atheism.
In my experience I have heard Atheists say that they couldn't care less about where they came form. Thus atheist could be more denominational then some of the major religions, due to the huge varieties of theories to choose from.
Your logic is in a total mess.
There are no denominations of atheists. I repeat atheism is the belief that God(s) do not exist. That's all - nothing else.
Now, atheists being all sorts of kinds of people will have all sorts of hypothesis - and none - for how life started, how the universe came into existence, but that's just people - they don't gather together into sects and fight with each other about it.
Please don't try to compare religious beliefs to scientific hypothesis - it's wrong-headed.
Life, don't talk to me about life - Marvin the Paranoid Android