I though it will be about Less Wrong. (Discussion with a friend, who identifies with the crowd: "Is it a cult? Yes, but a good one!")
There was also an "atheist church" in London https://www.bbc.co.uk/news/magazine-21319945 I wonder if they were aware the concept has quite a history.
> It's a nice excuse to get together and have a bit of a community spirit but without the religion aspect
> It's not a church, it's a congregation of unreligious people.
Seems more a gathering of same-minded persons than a real cult.