This statement sounds sensible at first glance. But I don't think it actually is supported by anything.

Crafting rituals from scratch is hard (the next article is about that), and its easier to craft rituals if you have more history and source material to work with. But I think Less Wrong already has an array of powerful, interesting ideas to support songs and stories. I don't think there's any special amount of time you need to wait before you're suddenly allowed to have ceremonies.

Was there another reason why writing songs and stuff should wait till later?