why do you think they want you drinking out of aluminum cans, baking food with it, wrapping foods with it etc. traces of aluminum have been found in water as well. the more they can put in your system the better controlled you are

So maybe it is a conspiracy to take off your hats and expose you to the signals?

They certainly make it easier for Governments to locate and track you.

I mean, wearing one you'd be spotted quite easily.