No what I said is that AL is 1/3 the strength of steel, so it need to be 3 times as thick for equivalent properties of the part. It can save weight in casings with complex geometry. It isn’t magic.
The heat transfer is better, but beware of thickness differences. Al is thicker, so it loses some advantage there. Years back I ran a test of an Alimknum pot vs. a SS pot, pretty much the same size. The SS pot got the water to a boil quicker. Thickness differences, and also the surface finish do the AL being rough, and allowing vapor bubbles to form and reduce heat transfer are what I attributed that to. I never did a follow up, where I would polish the AL pot and see if it got faster at heating the water.
So as in most everything homebrewing, it depends.