This is exactly why I like the advanced defensive metrics and WAR.
WAR actually does show that at his current abysmal rate of offensive production, JBJ can't really make up for it with his defense.
Duran's current fWAR is +0.5 and JBJ's is -0.5.
He was throwing the change-up in his last rehab start.
https://www.boston.com/sports/boston-red-sox/2022/06/25/chris-sale-rehab-outing-red-sox-rib-cage-injury-update-return-portland/
Repeating what Max said, a 1 run lead at YS in the 9th is tough for anyone.
Houck is a young guy who has just started in the closer role. He's had some rough moments but ultimately got the final outs.
Have some patience.