By 'aged' they mean left sitting on the counter overnight.

You can easily buy wholemeal flour, it just costs a lot more than plain white flour. At least it does here. I recently ground up some rolled oats in a spice grinder to make crackers, along with a bit of sourdough starter. Worked out ok (and cheaper than wheat flour) but the dough I got from oats was pretty heavy and thick.

It contains at least one whole wheat.

It’s not inorganic… seems pretty organic to me.