Hey look at that! Straight from their website:

> The Satanic Temple has become the primary religious Satanic organization in the world…

And

> The rise of The Satanic Temple has been met with an increase in commentary regarding what Satanism is…

This didn’t sound right to me, so I did a tiny bit of “research” and ended up on Wikipedia (because of course I did.)

It looks like classifications of Satanism include both theistic and atheistic Satanism, and TST can be considered a type of atheistic Satanism.

So I think it’s better to say they are a Satanist organization, but that doesn’t mean what most people think it does.