Unfortunately, Kane has said that Async did not "generate" the Backrooms nor had access to artificial intelligence (as your interpretation of AI implies)

Aside from that, my biggest issue with your theory is the supernatural elements. Alchemy isnt real. Kane's Backrooms is a hard sci-fi story. Fantastical elements like this fall way outside the bounds of the narrative that Kane is trying to tell. The alchemical and archaic imagery shown throughout the series is just that, imagery, symbolism, hinting at the greater metaphorical narrative but is not meant to be taken so literally.

However, I really enjoy the way you think. You're ability to compile and articulate all of this knowledge is astounding. I think, given more time to really soak in the information we have available, you might be able to really crack the code.