So teammates are sucking the whole game and you finally call them out
Why?
It's a team game. Team spirit and team work are very tangible, realistic benefits to have. Knowing how to synergize and coordinate with allies is an invaluable asset to have. Being a spartan that shields the man to your left and all that.
trying to punish people you need to work with will pretty much always result in them not working with you, as well as reducing the likelihood your team can work together as a unit while killing your moral at in one go.
Winning a game from a serious disadvantage is quite possible, but big turnarounds pretty much always require your team being willing to work together.
In team sports like Soccer, Basketball, Football, and LoL a team that's practiced together can easily mop the floor with a team of randomly assembled individuals.
Same thing with military units.
But the loss is because of "your attitude."
It's certainly not helping your chances of winning, you're mostly sealing your team's fate by evoking attitude.