You could have checked his conference talk as well, instead of downplaying the interview.
"Microsoft is Getting Rusty: A Review of Successes and Challenges - Mark Russinovich"
https://www.youtube.com/watch?v=1VgptLwP588&t=1903s
The only Microsoft divisions that are still all are into C++ is Windows and XBox, and still, C++/WinRT is now in maintenace, the team has moved into windows-rs, WDK now has Rust bindings available.