I highly doubt someone is going to solve one of the current biggest mysteries in history using pop science websites on Reddit. And it most likely will remain forever unknown unless there’s some breakthrough archaeological find in the real world. It’s a well known fact that people travelled from as far as northern Scandinavia and Scotland with movement between to the Mediterranean to trade with Bronze Age civilizations.

To claim that these Central Europeans were the Sea People is like claiming China first discovered the Americas. While there is evidence to support the Sea People came from a variety of cultures and those potentially could’ve been from deep inside Europe they were far more likely to be a mix from Sicily, Illyria, North Africa, and elsewhere. Maybe Pannonia but even then you’d have mountains separating who ever is there from the sea.

The more realistic option is that whatever crisis in europe happened caused the flow of trade to stop coming into the Mediterranean from Central Europe. Causing massive whatever merchants who lived off that constant supply to essentially switch careers from merchant ships to desperate pirate fleet or risk losing everything