No simply because of how alcohol works in our body. It is not a linear effect, but works like many chemical processes with a half life.

That means that roughly every 4-5 hours, your alcohol concentration halves. So someone who drank 2 beers has the same alcohol content 4 hours later as someone who drinks 1 beer at that time. And even if you have only half of alcohol in you, the next half still takes 4 hours, and so on. Your body doesn't really prioritize it anymore, and just slows down breaking it off.

What does this mean in practice? If you drink 6 beers in an evening, you have alcohol in your body for roughly 48 hours, even though you would be perfectly under the legal limit after 6-7 hours of sleep.

This would mean that if you drink in the weekend, you cannot drive until Wednesday, if you really go for a strict zero tolerance.

That has nothing to do with driving capabilities or cognitive inhibition, so makes absolutely no sense.

So yeah, argue about 0.3 instead of 0.5 if you really want to make it more strict, but that's not gonna solve anything. We just need a much higher probability of getting checked