I have no idea if they really used her voice, or it is a voice that just sounds like her to some. I'm just saying openai's behavior isn't a smoking gun.
If this isn't a smoking gun, I don't know what it.
I think people forget the last part of the definition, though. A Smoking gun is about as close as you get without having objective, non-doctored footage of the act. There's a small chance the gun is a red herring, but it's still suspicious.