Quoting the quote from the article (so it’s more obvious and accessible here):

The Indie Game Awards have a hard stance on the use of gen AI throughout the nomination process and during the ceremony itself. When it was submitted for consideration, a representative of Sandfall Interactive agreed that no gen AI was used in the development of Clair Obscur: Expedition 33. In light of Sandfall Interactive confirming the use of gen AI art in production on the day of the Indie Game Awards 2025 premiere, this does disqualify Clair Obscur: Expedition 33 from its nomination. While the assets in question were patched out and it is a wonderful game, it does go against the regulations we have in place. As a result, the IGAs nomination committee has agreed to officially retract both the Debut Game and Game of the Year awards.