Thanks for putting in the word "potentially" because it recognizes an inescapable reality: the world is unsafe. We have to live in this world. That's just life.

I would however take another step and say some people disagree about opening the factory being more unsafe than other options.

There absolutely will be COVID cases at the factory. But there will also be cases outside the factory.

It's really difficult to say wether opening is safer (because employees are in a pretty safe environment with respect to COVID, relative to their homes or other places they can travel to, and because they have health insurance) or whether it's more dangerous and somehow the factory will be a hot spot of viruses, even though it's a super dry place full of metal and sparks.

Let's just recognize, on your point 4, not everyone agrees that keeping the factory closed is the safer option here.