I dont really think there are a lot of people who just wake up que a competitive game with an intention to throw before even the match begins.Even if its their smurf.I see a lot of people playing normally but if they just make a bad play or just not having a good day a teammate will say something like "wtf u doing".If they whiff once he will say "wtf is that aim.You got boosted?".Theres even a lot of passive aggressive comments that can make someone tilt.And you know the usual toxic things these type of teammates say.And these will make them triggered and they start throwing.Most of them throw cos its their smurf and they dont wanna give win to a teammate like this.I know if anyone is toxic u can just mute them but i guess they wanna take "revenge" and teach the toxic teammate a lesson as they dont really have anything to lose.I have even seen guys with skins do this on their main.Someone having a bad day but still playing is way better than someone sitting afk on base and telling a everyones location.And u get absolutely nothing by making such comments when ur teammate plays bad other than a potential throw.