You are really reaching here. We're talking about speed limiters on cars, not accidentally murdering alcoholics who would be able to escape from a wildfire by speeding except that they can't drunk drive because their car has a breathalyzer on it.

I would instead say that people who cannot legally drive should avoid living in places where driving is likely to be essential to their survival. But also I have nothing but contempt for drunk drivers. If you're addicted to alcohol, there's a simple solution: don't drive, at least not at the same time you're drinking. Maybe plan a little. You have to spend a lot of time placing your petty convenience over the lives of others before you get your license taken away.

People with that medical condition should make alternative plans. If you are an alcoholic, so much so that you have driven drunk so many times that you were caught and convicted multiple times and required to have an interlock device installed, then you need account for that. There are plenty of people who don’t own a car at all, so lets not pretend that we are talking about taking away someone’s pacemaker.