I would say that Tatarinov's days at Microsoft may be numbered after that ridiculous assertion. Has he not read the bio of his new CEO? Nadella is the driving force behind Microsofts growth into the cloud.
Obviously the board realised that cloud is essential for the future of MS and backed the guy that has been instrumental in moving to that arena.
So Tatarinov may be correct for the state of play today - but he is wildly underestimating the way his company is going to move and how the general market is going to change in coming years.
Good to his career.