The Philistines continued to exist and to develop their civilization for centuries.

The Shardana continued to appear in records from various parts of the Mediterranean.

The broader disruptions of the Bronze Age Collapse reshaped the ancient world in ways that far outlasted any individual battle or military campaign.

What Ramesses III actually accomplished was to prevent the collapse that had consumed the Hittite Empire and the Mycenaean palace centers from consuming Egypt as well.

Egypt survived the Bronze Age Collapse — battered, reduced, changed, but surviving.