We also don't know exactly how much input Arniel had in the teams systems and playstyle.That I agree with.
But that would have been a change from the results Bones was getting and so might have actually been meaningful.
But a short stretch as a fill in, where nothing was changed and where the record was similar to the before and after periods really doesn't mean squat. You are free to value it if you like.
We believe that the plan all along was Bones as a culture stopgap guy with Arniel taking over. If that's true, wouldn't it make sense to integrate Scott in along the way?