If Thanos is as powerful as he is in Endgame without any stones, how did his species die off so easily?
It's like the Saiyans all dying off without a Freeza blowing them up.
I'm under the impression that Thanos greaty oversimplifies the circumstances of the demise of his home planet and species.
The idea that overpopulation alone world turn a planet into a wasteland AND eradicate a space fairing species doesn't pass the smell test. There must have been some cataclysmic event - perhaps Biological warfare.