The only "defense-obsessed" moves I can really think of were bringing Kiermaier back and signing IKF.
They've focused on defense, but they've also brought in all-bat players like Belt and Turner and promoted players with no defined position to get their bats in the lineup.
I think the idea that they're just obsessed with defense doesn't have much backing. They've made a couple d-first moves the last couple years, but there's no way you can point to that as a clear direction going forward, especially since they've changed directions based on results a couple times.