You can make a case for command as a contributing factor in Ober's struggles last year. At the same time, you can't dismiss his lost velocity as a major factor as well. Even in 2024, Ober's fastball was almost 2 mph below league average. When Ober was throwing close to 92 in 2024, it played well with his height and wingspan, since his release was that much closer to the plate. Batters were often late on a below average fastball. He can't get that same effect at 90.4.
My guess is that the velo and command are both tied to the hip labrum issue. At age 30, a profound velo drop shouldn't be expected without an underlying cause.