Yeah, it's bunk and BS,just like the 3 year life of aluminum often touted by many 'expert amature metalurgical regurgitators.'. Haven't you figured it out? The durability aluminum is totally a function of whatever idiot happens to expousing about it. Said with all due respect to any real metalurgists, especially ones in the business of fabricating aluminum,but not 'science' majors working on 'Phds'.