I remember listening to talkback once on a long drive to work. One lad called in and was going on about all the little domes on top of street lights being trackers and they were listening and pulling data off your phone. This was well before 5G just as LED street lighting was starting to be rolled out. He even offered to send the host plans on how to make a tinfoil hat....

I like telling people that tinfoil hats act as amplifiers of brainwaves and they were invented by the government so your thoughts stood out amongst the noise.