Vote to Surrender should need 5 votes, not 6.

I'm struggling to understand why voting to surrender needs all 6 people to agree.

Recent game, Scarlet Witch (in D1 no less) goes 0 5 on defense and blames the healers, typical (He walked in front of our Strange multiple times and just died for free). We weren't rude, but we ask him to switch. Finally switches to Jeff. We get the first checkpoint and then he ults his own team and spits us off the map. Then afks and votes no on surrender when we realized we weren't winning 5v6.

Had another game with a similar instance where a DPS player can't get over his ego and just decides to throw instead of flexing.

Why does 1 teammate have the power to hold the whole team hostage?