There is a nearly zero percent chance that the game developers are also cloud experts
Well yeah, that's why you would put some cloud experts on the project besides the game devs if you're doing things like this. It's not just game developers working on the game.
Doesn't even have to be people feom the Azure team. Microsoft has plenty of resources to teach someone to be a cloud expert in other branches, they even offer certifications for outside people, surely they can manage a few of their own.
Iirc, they didn't. There was one person who didn't really have the authority to make such claims say something that could have been understood as win 10 is the last windows.
I hate to defend Microsoft, they're an awful company, but this just was never really true.