Horseshit.
The current state of code generated by AI is sketchy at best. I often get plain wrong answers because the model tries to derive. It comes up with calls to functions and properties that just do not exist.
"You are right, I made a mistake. Here is a better answer." Continues to give wrong answers.
Apart from that, apps that are glued together from AI generated code are not maintainable at all. What if there is a bug somewhere and you so not comprehend what is actually happening? Ask AI to fix it? Yeah good luck with that.
I do use AI for simple questions, and it works fairly well for that, but this claim by MS is just marketing bullshit.