>>213034111Because he constantly redefines facts in his favor and only engages in meta-arguments about any topic on which the opponent knows more than him, declaring himself to be the highest authority on what the debate is about and what the conditions are for winning the debate
Anything he's more knowledgeable about is the opponent's lack of education. Anything the opponent is more knowledgeable about is "outside the scope of this debate"
Then he critically shuts off communication (mute opponent's mic, ban voices of dissent from chat) as people start calling him out and his scheme is about to be unveiled, creating an echo chamber where he is unquestionably right and declares himself the eternal winner in all his might