Make more Effect Durations available for Movement Modifier

Why is the lowest Effect Duration for the Movement Modifier 3.0 ??? It goes up to 600 in 0.25 increments, why not include every value up to 0.0? I get that numerically stable increments of 0.25 are preferable, even though they are not that fine. But I do not understand why the values of 0.0-2.75 are not included. Makes no sense to me and I need those values.
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