Nobody cares. It’s a good quality, creative use of AI art.
It’s obviously not just a couple of prompts thrown into ChatGPT Dall-E. It’s clear to see that a lot of work went into creating a coherent style, creating consistent characters and a bunch of post processing was done to make things fit together. There are only very little mistakes and none are distracting (like too many fingers, broken limbs…).
This displays creative use of a tool with a necessary amount of skill. Which basically is, what Art should be about.
Devs only have a certain amount of time and skill for hobby projects without financial incentive. This is the road they chose, which is an artistic decision. Respect it.