I wonder if anybody performed those tests... if anyone did, some are probably systematically changing out their cookware. The truth sucks sometimes but its always good to know.
I don't really see how that relates to canned beer, though. If the AL pot in your test was lined like the cans are, it would be more relevant.
Exactly, any can for beverage storage is lined so there is no metal in contact with the beverage. This is just a perception bias that will not stand up to an objective experiment.
Most household aluminum cookware is either anodized or teflon coated anyway. If you could find an untreated aluminum pot (like a brew pot), how would baking soda added to boiling water be in any way similar to beer?
I have done a blind triangle test with soda from PET bottles vs. a can. I absolutely could not pick out a difference when they were both poured into a glass. Before doing this I was certain that I would be able to tell the difference - it was all in my head, associating the flavor of drinking directly from the can. If we're talking about beer vs. soda, soda is the more corrosive of the two because of the lower pH, and if anything would be more likely to leech metal from the can.
If you are able to do an objective triangle test where the only difference between the beverages is the package (same age, brewhouse, serving temp, etc.), I really don't think you'll be able to pick out a difference better than chance. You'll have a hard time convincing somebody else of your ability to detect these differences without some sort of controlled experiment.