@neptuneblue,
For the record, I am vaccinated (and now boosted) and I am fairly conscientious about wearing a mask. So this is a hypothetical. Let's talk about what it means to be "liable for causing" someone's death.
Let's consider some examples of liability
1) I pull out a knife and drive it into the back of an unsuspecting passerby and they die. In this case I am taking an action that I likely to cause grave injury.
2) I get drunk and run over a pedestrian and they die. In this case I am taking an action that is irresponsible and dangerous.
3) I have unprotected sex without knowing I am HIV positive. My partner dies. In this case I am taking an action that has known risk (accepted by both).
4) I serve a double whopper and fries to a clearly obese person. That person dies of heart failure caused by eating fat.
5) I am driving sober, and going the speed limit and following all of the rules. But I am momentarily distracted by a cat running on the side of the road and accidently hit a pedestrian who dies.
In which cases am I "liable for someone's death"? My point is that this a meaningless turn. Any time I get into a car (even perfectly sober) I increase the chance that someone might die.
My best guess is that #1 and #2 are "liable for someone's death". I think for me the line should be drawn when someone both takes an action, and that the result is known to be likely to cause injury. I don't think I would consider the rest of the examples in the same way...
The point is that this is a rather silly exercise in political outrage.