I might be wrong, but Bezi is mainly a coding assistant (fed with extra context about your Unity project structure). Using Gen AI assets would be another choice above and beyond using Bezi, and as per the rules, one that should be disclosed by the authors on their game description.
For the record, I also think that jams should be about the journey, not the destination. Ideally, jammers should strive for as much homemade output as reasonably possible.