You can't get covid from contact infection. Or at least it's really, really hard. We could dig up studies for that, but you can also look at how food delivery which exploded in popularity all over the world during the lockdowns apparently did not transmit Covid.

You're moving the goal posts. Your assertion was that viruses don't last long outside the body. GP shot down that argument. You have not refuted their argument.

Even without being that strict about the discussion, I think GP was making the point that viruses can survive for many days, so stating that "you'd only be exposed to viruses from people you already share a room (or even bed) with." is an argument that requires some elaboration.