By Luc Olinga The billionaire remained discreet about an event that occurred recently in his private life. Elon Musk, 50, celebrated his title of man of the year with his very young son. The billionaire brought, last December, X AE A-Xii, 22 months, to the Time 2021 Person of the Year event where Musk received the recognition. X is the son Musk shares with Canadian singer Grimes, 34. X had managed to steal the show from his father that day. According to a video shared by Time owner Marc Bienoff, Musk entered the room where he was to be interviewed carrying X, an appearance that won over the au…