CHARGING INVENTORY SHRINKAGE TO COGS

Why is shrinkage charged to COGS account if inventory shrinkage is an indirect cost and COGS are all the direct cost associated with the manufacturing process?

Also, it seems odd to charge shrinkage to COGS when COGS end up subtracting NET SALES to arrive at Gross Profit and there isn't necessarily a sale of a good when there is shrinkage. Shrinkage just means that either products were stolen or deteriorated.

To me it seem more logical or dialectical to just create an shrinkage expense account and put it under the indirect operating expenses. Even though it will have the same effect in the number given in the net income because I'm just moving down the shrinkage cost from the section of gross profit computation to the income from indirect cost operations computation but still, it seem more logical.