Well, does he have some theory how planetary positions play a role in earthquakes, specifically how their positions could lead to an earthquake in turkey but not peru? Is just saying "there will be an earthquake sometime in this earthquake prone region" really that insightful?
FYI: They essentially murdered Semmelweis for not having a theory for how washing hands after examining cadavers and before delivering babies could save lives. He sadly came up with this nutty idea a few decades before we had germ theory and such.
There's a difference between that, where a small additional step improved safety, and this, where the credibility of the prediction would need to be assessed to be able to mobilize the wide response which would be needed ahead of time.