As I said, not nearly all Masters must have Master's degrees - e.g. Master Sergeants - only about 9% have Master's degrees. https://www.zippia.com/master-sergeant-jobs/education/ Back in the 80s you could be a Grand Master (e.g. Flash or Melle Mel) with no degrees, just a couple of turntables and a mike. You can still be one - but now you have to be really good at chess. https://en.wikipedia.org/wiki/Grandmaster_(chess)#:~:text=At least 50% of the,include the player's own federation Credential inflation has struck in the chess world. There are now Super Grandmasters, referred to in the link. I hope that's nothing like a WIDU "Grand PhD."