I season raw aluminum, Cast Iron, Mineral steel, and high carbon steel ans. All of these raw metals react with alkali, and acidic ingredients, giving an off taste tp foods, and causing corrosion of the base metal. I first seasoned a set of cheap aluminum camping pans, as I was tired of food sticking horribly to them. I was happily surprised that they performed very nicely afterwards. The aluminum sauciers, and fry pans sold at GFS state on their labels that they need to be seasoned.
seasoning creates a carbon barrier that is nearly non-stick, and protects both the base meta;, and food from touching each other, and reacting.
There are many who will disagree with tis advise. But for me, the roof was in the before, and after performance of the pans/pots.
That's my take on it.
Seeeey; Chief Longwind of the North