I swear that I’ve observed this very-same discussion between the Way of the Master evangelicals and the Mill Avenue Resistance.
Unlike many of the other mythological and fantasy archetypes, the literary addition of the lich is a relatively recent addition. Although the underlying history comes from a multitude of sources. The cognate for the word has a heavy weight from Old English and the German word lic referring to a corpse or body.
Many cultures have studies of ancient sorcerers who return after death to reanimate their own bodies. Most folklore from tribes that venerate their dead also suggest that the innate properties of the former person (given a connection to gods or a predilection to magic) could possess their former vessel. These expectations fuel a great deal of cultural awareness of the external spiritual worlds and the afterlife of the dead.
The best known example of the lich that I’m aware of comes from the Dungeons & Dragons game—which is well known for drawing on folklore and mythology of dozens of cultures (mostly European) and certainly the extent of the use of the term has grown out of the widespread appeal of D&D.
It’s not unexpected that geek culture would adapt to examine and redefine our understanding of the mythology of old and modern practices that involves it.
While each term used in the argument above is a discussion of external culture examining and categorizing internal Christian mythology and symbolism it hearkens back to the rise of the meme, “Zombie Jesus Day” in reference to the celebration of the holiday of Easter.
In a subcultural sense the terms and the argument in the poster will resonate in particular most boldly with geek culture. Well known for a sense of pedantry, an obsession with category and correctness, and that’s all that’s needed to attempt to morph a meme that’s seen as inaccurate.
Although, I doubt we’ll be seeing this meme take hold. It’s embedded too thoughtfully in the pedantry and doesn’t entertain enough of the pageantry.
As we’ve seen with previous memes often humor more than accuracy provides durability. The above poster may reappear next Easter holiday due to the nature of humans to categorize even their own thoughts and the mythology of others; however, the meme involving zombies will prevail due to its silly, irreverent nature.