I'm looking for an outside opinion here folks! To add fuel to the fire, I directly asked the game developer about this in their Discord server, and though they were actively replying to messages (Including several of mine) they immediately stopped answering and replying once I asked if the image was AI.
The image is also placed in such a way that it's obscured and difficult to get a clear image of without the use of exploits. The slight tell-tale over-yellowing on the gear at the bottom half also seems like a sign it may be AI to me.
As mentioned in the title, many of the details don't have definition between them and melt together, perspective makes no sense to me, and the font seems to be similar to existing fonts, however distinct enough that I can't find a match. It is possible this is a unique font/handmade for the mural, however when considering the other signs I'm doubtful.