I found a player called shawnplaysgolf which has the blunder master title
The Blunder Master Title.

What?
I found a player called EnCroissantCheckmate and he has the Blunder Master Title.
many people have that title
but currently
dimwit honchkrow and brickhead sobrukai are fighting for it this year

Should I mention the 'M'?
Probably not after this drama: https://www.chess.com/blog/JosephReidNZOfficial/the-chess-roller-coaster
To be a blunder master, you must do the worst possible moves, so that you lose to your opponent even if they are trying to lose.