I can't control what other people do in grocery stores. They walk too close and there's nothing I can do about it. I'd like something to keep shit out of my eyes.
Last time I shopped in a grocery store, I went when it wasn't crowded and prioritized staying away from people. If someone came towards me I went the other way. If someone was already in an aisle pointed toward me, or was pointed the other way but not far along, I didn't go into that aisle just then. If someone stood in front of an item I wanted, I came back for it, or skipped it if it wasn't important.
I also wore a mask, but I treated that store as hostile territory, focused on avoiding people, and got the heck out as fast as I could.
Are you stuck in place? Can you not move? Do you have no voice?
There is a lot you can do, and other do about it.
If you are referring to humans as potentially lethal weapons, and stay at home orders, then, yup.
Still, that's an interesting point, maybe it's a good reason face shields are better than goggles.