I will dispute that McKinstry provides no value to the roster. 0.8 bWAR, 1.1 fWAR last year. Perfectly fine for a role player. This may not show up in the raw batting stats, but he was a plus plus baserunner and plus fielder. And the last time I deep dived WAR metrics, versatility wasn't really factored in. The fact that you can bounce him between 3-4 positions in a single game allows you to maximize matchups elsewhere.
I'm not sure if there is a place for him on the 2025 team. The bar could be higher, and his modest raise in arbitration could play a role. But to say he has no value is not true.