In the Products panel you can't enter a UPC in the search box and get the product info as a result. You can't even find it if the UPC in the description, it has to be in the title.
A use case would be you picked the wrong item and now you have to figure out where the heck to put it back. You already have a barcode scanner with carriage return and ShipStation open. Click on Products, click on the search box, scan the barcode. "Oh, it goes in bin A-2-3-7."