A CPU on its own cannot be a microcontroller alone via its definition; as a microcontroller contains a CPU and other needed components to drive it.
No microcontroller is going to beat a computer with a modern microprocessor on complex computing though. But it's good to know tech is still improving on all sides.
Purging of contributors just because they originate from a country is not how leadership of an open source project should act. Really sad to see.