The risk of severe injury to a third party by my choosing to cycle drunk is much lower though. Maybe I hit a pedestrian and they are knocked over - it's possible but very unlikely that they receive life changing injuries. If you hit a pedestrian while driving a car they probably die.

Sure it's risky for me to ride drunk - but the risk is mostly on me. I've also had far more near misses sober in peak hour than drunk at 2am. The biggest risk at 2am is a drunk driver wilfully or accidentally runs a red light and t-bones me.