At all levels of consumption, the odds of dying in a motor vehicle crash were significantly higher than for zero alcohol consumption, and were approximately 13 times higher at the current legal limit of BAC = 0.08.
Driving at the legal limit makes you 13x more likely to cause death, but when the odds of you driving sober cause a deadly accident are super rare to begin with, driving drunk only increases the death from driving by a little bit(from a numerical perspective).
Let’s say that not doing action A resulted in 1 death annually and doing action A results in 100 deaths a year in the US. Let’s say that a typical person has a 50 percent chance of doing action A in a year. On one hand, given that action A is 100x more dangerous, governments might ban action A. But on the other hand, if action A only results in 99 more deaths a year, let people live their lives.
I don’t think the ratio of dunk driving deaths to non drunk driving deaths matters as much as how many people die from drunk driving, and how many would die per year if it were legal to drive drunk. If few deaths happen, give people liberty.