It's literally not, though. Ya'll are just turning this into a witch hunt and seeing AI in everything. The dev even posted some of the in-progress art on their ci-en:
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In order, the rough sketch, the line art, and then the colored version. As far as I can tell Dos is a legitimate artist with a record going back to 2014 and a visible evolution of their art style. The fingers are fine, the character design is consistent, and the hair doesn't do any weird stuff like merging with other parts of the body.