All organizations are religious? Just because there is an organization doesn't make it religious.
It's ridiculous to say an organization that rejects the belief of God is a religion.
Who said all organizations are religious?
It's ridiculous to say that atheists who have all of the earmarks of a religion are not, in essence, a religion. Don't just point to one item. Look at everything I mentioned.
They have a fundamental belief (there is no God).
They meet on a regular basis, sometimes every week, at "humanist centers."
They have national and probably local organizations.
They have annual conventions.
They have a cable TV show.
They probably have radio shows.
They publish magazines and likely newsletters.
Based on their website, it looks like they lobby.
The website also looks like they have support groups.
If you view these factors
together, it absolutely qualifies as a religion in my book.