I am wrong and Microsoft is even dummer then i thought to allow this.
FYI: this image is fake.
The sentiment is true but there is no such thing as a =Copilot() command.
Source: My work gave me a pro license and i could not replicate this. It still absolutely sucks in every conceivable way compared with claude.
The only other way is if this is a region exclusive update but even then its questionable because the implication of those cells updating live could be exploited to be very expensive for ms.