We have learned that almost all our technology is created and manufactured to almost always be a mixed blessing. Useful, but toxic; helpful, but environmentally harmful; labor-saving, but needlessly dangerous, and so on. Aluminum is such a material. Extremely lightweight and durable, but toxic and difficult to make without gargantuan amounts of electricity. That said, aluminum siding was a popular product until the late 1970s when it fell drastically out of favor. The 1970s is also when there was a war on “lead paint” to get it off the market entirely. Turns out, both aluminum siding and lead paint interfere significantly with WiFi signals. Was this foreseen by the interlopers and is it an “overlooked” reason why there was such a push to move people away from both of these products?

While there are some downsides, as you described in providing a certain degree of shielding from electronic signaling, this was not the major reason for the phasing out of these products. You can be sure that the extraterrestrials will always arrange things to their advantage, so this was a confluence of human choice and decision that was made for other reasons but was in alignment with serving the extraterrestrial interests, and in fact that is why they came about. Without that dual interest on the part of the extraterrestrials, you might well be living in aluminum structures with lead paint everywhere because there are downsides in doing so for human health reasons as well as cost. The main thing you need to make people aware of is that the current environment of electromagnetic energies that bathe everyone 24 hours a day is unhealthy and in fact shortens the lifespan; it is the cause of many chronic illnesses and early deaths, and that is why it is being done, first and foremost. The second reason being, it facilitates the alien programming of your minds by addicting you to electronic devices, including cable television, musical recordings, radio, and the Internet. They have people on screens, looking at screens all day long, and during every moment of that time there are subliminal programming messages being beamed into their deep subconscious minds. This takes a toll over time and this is what shapes political beliefs and other ideologies. They will take a person with certain leanings and then find a way to pervert those preferences in supporting things that are either overtly damaging or doomed to fail in some way and set the person up for disappointment. They work both sides of an issue so they will have a way to motivate political conservatives to champion their cause and, if possible, pervert it to harm their opponents and they will do the same thing for those with leanings towards the left, the so-called liberal ideology which is increasingly becoming an extreme invitation to deep state totalitarianism. In this way, they build the message on an inner truth the person already believes and work from there to shape and warp further thinking to add on components that are false but consistent with the overall personality of the individual, and in this way create a kind of pollution of everything. This is why things are so dysfunctional within your culture. You cannot point to a right side and a wrong side, but mostly to a "wrong side" and a "wronger side" most of the time about most things, if you can look at it dispassionately. That is the handiwork of the extraterrestrials, that they make bad things worse and they undermine the good to taint it in some way so that eventually it will fail or become corrupted and counterproductive. This is the legacy of all the technology and why it exists. Again, that is because it serves the Extraterrestrial Alliance as much as it serves humanity, otherwise you would still be living in the horse and buggy era.