"Place has closed due to the owner either retiring or dying (I forget which of the two)"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-11-22T15:57:19Z
POI name: Flyboys Deli
POI types: amenity-restaurant cuisine-sandwich
 #organicmaps ios