I'm against any kind of oppression, by religious people ostensibly for reasons of religion, or by atheists/non-theists. Organised religion has always been didactic and dogmatic, whether that is allowed or not. Even religions that were persecuted, like the early Christian church, or the Catholic church in Ireland in the Penal days, were didactic and dogmatic. Organised religion teaches its beliefs as fact because it sincerely believes there is a god, or gods, or whatever it believes. God is the centre of the existence of most religions; their raison d'etre. Hence the preaching, teaching, organisation (the better to spread the word) etc.
Why would atheists want to tread the same well worn track that organised religion has already trodden anyway? The danger to atheism is that it will lose the mantle of freethinking. I do not see a danger to organised religion. If atheists are serious about their rejection of organised religion they should not seek to tell anyone what to think, surely? Since when have freethinkers put on the same hat as organised religion? Or are freethinkers and atheists different?
If this is an atheist camp, promoting atheism/scoffing at religion, or just promoting atheism, and not a camp where campers are to think freely and draw their own conclusions, then the aim of the camp has been mischaracterised. I think the line between freethinking and atheism is blithely assumed not to exist by CQ, but I believe there is a line and the IPU thing demonstrates by the fact of its insertion in the camp programme that this incarnation or outreach of atheism is just as didactic as any organised religion, no matter what conclusions the campers may reach on its existence.
If I were a scientist of faith I would be concerned that the approach of CQ would give credence to those who wish to do away with the teaching of evolution in schools.
If I were an atheist I would be concerned to see atheism co-opting science or philosophical inquiry, or asserting that there is no room in organised religion for inquiry or the intellect because that is demonstrably not true, and requires a leap of faith in order to believe it. And also because science and philosophical inquiry are for all and not tools for any particular worldview to use to oppress another.