This has been refuted.
https://www.theverge.com/2023/11/22/23973354/a-recent-openai...
https://www.theverge.com/2023/11/22/23973354/a-recent-openai...
This isn't a refute. All we can say now is that there are conflicting sources. There isn't a way to determine which one is correct based on this.
If another article comes out and says the verge article is false will you believe it?