they pissed the aliens off somehow
Technically, it wouldn’t have been “Greek” anything. From 3200–2000 BC, the latest time in which Sodom was destroyed, on some of the Greek islands was the Cycladic culture, overlapping and subsumed by the Minoan civilization from 2000 BC forward. Then the Myceneans (1900–1100 BC) gradually absorbed the Minoans. Only after that did Greece, as such, exist, in a dark ages that only properly ended with the first Olympic Games in 776 BC.