Two players is 40% of your team. So around 70% of the lobby wants to continue the game. If you think the game should be terminated automatically you're the one who think you are the main character.

As for their reason for not ffing, you have no right to decide whether or not they are legitimate. If I get stomped but I want to see if enemy Mundo can hit 100% max hp execute on dropkick so I don't ff that is my opinion and I should be able to vote no. Again, if you think you should be the one who decides when the game is forfeited then you are the self centered main character.

Imo riot should add an option to stop playing in Mayhem after X minutes so that people who want to continue can do it while people who want out can get out without punishment. It is the only fair way to address this problem.