It's accepted there's some lunar influence on small quakes in hydrothermal areas and at volcanoes; and a recent paper claiming to find a small influence for offshore quakes.
But the idea that there's a clear and obvious moon relationship for large quakes is a crock; it's easily checkable and there really is nothing that jumps out; yet people continually repeat the false idea that the moon phase-quake relationship is something obvious.
As I noted, I've always found that surprising - but you can't argue with the facts.