These stupid useless stickers have taken over me family

My mom always gives me her old phones. This latest time she had this sticker oh it for “protection” against EMF or something. I just let it go and didn’t say anything. Then I went to our annual family gathering and EVERYONE has these on their phones, some saying they paid 25$ EACH for them. My entire extended family has them on their phones. Nobody seems to realize they are a scam or that they can’t possibly work. People who I thought were intelligent, rational, and critical thinkers are all buying into this BS sticker and I feel like I am the one going crazy now.