Atheists turning to cult behaviour?

[robvalue]

Well yes, there are a subset of atheists that are interested in making atheism more acceptable. But again, this is just a group with an additional agenda, that is not atheism.

It's just convenient to call it an atheist movement, because it is extremely unlikely to consist of anyone other than atheists by self-selection.

Sure, groups of atheists do things. But that is not atheism, even if the word atheism appears in the title of their group or their agenda.

It would be a sensible claim to say you have a problem with the atheists involved in the atheist movement of making atheism more acceptable. That would be a well defined issue. But to say the atheist movement necessarily involves all atheists is bogus. If that is what the OP was getting at, I'd have no problem discussing such a claim.