Six months is for brown rice.
While whole wheat or brown rice or other minimally processed ingredients may be slightly more nutritious they have a shorter shelf life and your body will gain less energy from them.
A good thing now when we are surrounded by delicious calorie available food in abundance and must restrain ourselves.
In a survival situation where you are having to do physical labor, not so much.
Rice is good for storing items that need protection from moisture...in WW2 that’s how they stored MANY things
White rice will last for 5 years.
Six months is for brown rice.
While whole wheat or brown rice or other minimally processed ingredients may be slightly more nutritious they have a shorter shelf life and your body will gain less energy from them.
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Properly packaged white rice and wheat grains will last 20 - 30 years or more. Just be sure to have a grinder/mill to process the wheat for bread, or you’ll have to settle for wheat porridge or something.