The “sea peoples” were themselves for all practical purposes invented to try to explain the imaginary dark age, so, no, they don’t have descendants, they didn’t wipe out the Mycenaeans, etc. For such a significant and large and devastating group, they left no dynasties, no tombs, no graveyards, no graves, no towns, no geographic traces, no characteristic weapons, no characteristic pottery, no coins, no nothin’.
And yet we have the example of the dark ages in Europe.
Recent archaelogy has it that all of the towns along the coasts of southern france italy and greece were flattened in the 600’s AD. what came afterwards were walled towns further inland — suggesting that what destroyed the coastal towns came from the sea. no trace was left of the destroyers.
It has fallen out of European memory just what happened in the 600’s.