If you were in danger of forgetting, William Wildblood may help remind you.
But it is one of the most successful demonic inversions when atheist hedonists who are in reality of the Left, but who personally oppose political correctness, try to argue that Leftism is an heretical Christianity, an evolution of Protestantism, or puritanism.
This error is mostly based on false rationalisation (from people who don't want to become Christians, because it would limit their sexual options) - but also derives from a US-centric kind of ignorance; because the US had nothing to do with the origin and development of Leftism.
Leftism originated in Britain and France (in the late 18th century), where its anti-Christian animus was obvious.
The US was very slow to adopt Leftism - which it got from Europe; and only took-over world leadership of Leftism from the middle 1960s