It would be an interesting game to figure out how to do shopping in a minimal number of aisles, with arrows. Unless everything you want is on the aisles going the same way, you should be fine.
I didn’t particularly care one way or another, but the arrows worked really well, having everybody walking the same way meant I didn’t have to walk by anybody in the store, and I am convinced that people with the virus would go shopping to make sure they had food before they went to get tested.
If you don’t think that walking past people was a problem, then yes, the arrows didn’t help. And if didn’t help if people walked the wrong way. But they definitely allowed everybody to maintain a 6-foot distance, plus most of the time, you were never breathing TOWARD someone else’s face.
I won’t miss the arrows, but they were a simple thing, and it cracked me up how stupid people couldn’t follow simple directions.
I argue that the government needs to treat us like adults, but watching idiots who couldn’t figure out an arrow in the supermarket, I had to wonder if we were capable of being adults.