Earlier quoted context omitted.
I don't understand what point you're trying to make. Yes Microsoft uses OpenAI APIs. What is the point you're trying to make beyond that? It's still OpenAI software.
Microsoft doesn't "use" the APIs, they host them on their own servers and have a license to do so and re-license to Azure users. If something goes wrong with OpenAI (given that it sounds like many key employees are leaving), Azure will stay up and you can keep using the APIs from MS.
Actually the exodus of talent from OpenAI may turn out to be beneficial for the development of AI by increasing competition - however it will certainly go against the stated goal of the board for firing Altman, which was basically keeping the development under control.