Harry The Cod
Firstly, Captains are NOT downgraded for random reasons. They're downgraded because the Company feels they're not suitable to be in command of the aircraft and when I and you along with millions of fare paying passengers put themselves and their loved ones on a plane, we need to be 100% confident that the Airline is 100% confident too.
The Captain demoted to FO for Amsterdam business pax offload is pretty damn wrong.