Getz had 4 of 8 positions to upgrade. He was stuck with 3 contracts, and a #3 overall pick. Lets look at each position:
C - He replaced Grandal with Maldonado as a sop to Grifol to help with clubhouse issues. Maldonado was a lateral move, but Lee/Maldonado was better than Grandal/Lee as a catching duo.
1B - I'd argue Getz had to give Vaughn a full year to step up. He regressed, both offensively and defensively.
2B - Has has been mentioned, this was a lateral move. Lopez is probably better defensively, worse offensively than Elvis.
3B - Yoan is a great defensive player, got injured 11 games in. Ramos was probably a slight step down, Sosa/Mendick were much worse. It's hard to upgrade from Yoan.
SS - DeJong was an obvious upgrade from Anderson.
LF - Benintendi regressed.
CF - Robert was injured. It's hard to replace his defensive production, even with an injured Luis Robert.
RF - Fletcher/Pillar was an upgrade from Colas/Sheets of 2023, defensively. Even Pham was an upgrade.
So when you're arguing that Getz failed in his main pursuit, 3 regulars regressed, defensively, one was injured. Of the 4 positions he could improve, Getz improved all 4, defensively. The regression of the 4 holdover positions dragged down the overall team ratings.