Don't know that I can defend or document this. Cuttings have a limited viability. I have had cuttings that were a year old and still rooted. However, most cuttings will not last a year in the frig. Most don't last 6 months. I am sure that the quality of the cutting, when it is taken, has something to do with length of viability, as does storage conditions. So, there is a downside to storage. Green cuttings taken in the summer can be rooted when they are fresh (though are more finicky). They do not need refrigeration (dormancy) and probably would not survive it. Green cuttings do not need dormancy, but that does not say whether dormant cuttings need dormancy (cold weather or refrigeration). Somewhere in the middle is what you can get away with, and what is needed. Maybe they don't need dormancy, but can handle it. Maybe they need dormancy but can get along without it.