[Thimothy]

"There is good evidence that large amounts of aluminum are harmful to humans."

But that's applicable to every substance in the universe!!! From serpent venom and uranium to oxygen and water. Seriously, you can die if you drink too much water and it's not pleasant.

Your argument proves too much, we can't ban everything that is harmful to humans in some doses. We can and do ban certain doses of certain substances, and that amount of aluminum is well bellow the damage threshold for humans.