No, I’m framing it as though those questioning the law are not concerned about public safety, because that’s what they are saying.
It’s as though they take no responsibility for the actions that led them to be drunk and have no way to get home, and then blame the law for putting them in that position.
Their posts are their cites, but we have a LEO and a prison employee both saying that they have personal experience with people who “sleep it off” in their cars but that then choose to drive before they are actually sober enough to do so. Sleeping for an hour or two after getting drunk enough to pass out in your car isn’t going to sober you up. How long do you think these people are going to sleep in their car before deciding that they are sober enough to drive home to where their warm bed is?
It would be interesting to see some actual statistics and data on it, rather than anecdotes, even if those anecdotes come from people who would be best positioned to be aware of those exact dangers. But if that’s a thing, where there are a significant number of accidents that occur after someone has “slept it off”, then it’s a pretty straightforward law to protect public safety.
It’s not really the about the law. If you actually care about public safety, you will take the chance of sleeping in your car, rather than the chance of killing someone due to being too drunk to safely operate your car. Maybe you just kill yourself, or maybe you just total your car. Maybe you even make it home safely. But it was the actions of the drunk driver, not that of the law or the police enforcing it, that caused that risk.