I think you're right, people in third world countries use lots of aluminum in their cookware (Thailand, while not being third world) is a good example of a place which uses it a lot in cookery.
Just don't use aluminum citrus squeezers or cook your tomato sauce in aluminum pots (as their useful lifetimes will suffer, and the food might take on a weird taste.)
It would also seem that most of the danger from aluminum cookery, where there is such, comes from impurities in the recycled aluminum (lead, and other hazardous metals).
That's true, but aluminum cookware is not as pervasive as it is in 3rd world countries, also, I'm willing to bet, the aluminum in US cookware does not have as much in terms of impurities --not guarantees on cheap imported cookware though.
Just don't use aluminum citrus squeezers or cook your tomato sauce in aluminum pots (as their useful lifetimes will suffer, and the food might take on a weird taste.)
It would also seem that most of the danger from aluminum cookery, where there is such, comes from impurities in the recycled aluminum (lead, and other hazardous metals).