They are serious about the religious stuff.

I fail to see how that's an issue.

Also, in the very page you linked, he clarified:

In the face of today's attention, which has included a wave of aggressive responses accusing Hipp of un-Christian behavior – he tells us he updated the preface to highlight the fact that by adopting St Benedict's rules he was not seeking to exclude anyone.

"Nobody is excluded from the SQLite community due to biological category or religious creed," he told us. "The preface to the CoC should make this clear. The only way to get kicked out of the SQLite community is by shouting, flaming, and disrespectful behavior. In 18 years, only one person has ever been banned from the mailing list."

He also said that he considered only retaining the bullet points that would be relevant to the project, but ultimately decided that would be disrespectful to the original text and its author. Seems fine to me.