Having worked at a Target like this, I can assure you there is still a lack of inventory on top of these stores being extremely short staffed. Target in particular completely eliminated their storeroom staff a few years ago and just doubled the work load of the floor staff. Both the floor and the storeroom were absolute nightmares to navigate because there were not enough people to actually organize and stock.
Ibuprofen probably isn’t stable for a decade. Then again, apparently no one knows for sure! Studies pick an arbitrary amount of time to test and then call that the shelf life if it remains usable. So far it doesn’t seem anyone has had the patience to test the absolute shelf life of ibuprofen