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.
Yes, the model weights were developed by OpenAI. They are licensed exclusively and irrevocably to Microsoft, and operated by Microsoft, not OpenAI. If you are building with these APIs and concerned that consuming them from OpenAI (which also runs them on Azure, but managed by OpenAI staff) because of the drama there, you can de-risk by consuming from Azure directly.
No wonder why CEO got fired.