"F*ck, what were those guys thinking?" Realising that Team Satan forfeited on their own, the spectators were surprised and mad.
They were surprised because it was absolutely easy for Team Satan to defeat this weak Team Red Flame so it was unexpected that they would forfeit.
They were mad as although Team Satan had a bad character, their abilities were undeniable, and was a popular bet to win the competition.
The spectators had always treated Team Satan as a seeded team and most of them had bet that Team Satan would win. Now that they did this, it made them lose money!
Everyone put their interests first so Team Satan obviously offended all these players.
More upsetting was that the system did not regulate such obvious cheating actions.
Of course, after all it was a non-professional competition so the judges' intelligence was limited and was not as professional as those robot judges' operational system used in professional leagues.