People throw away or resell other stuff as well that has Wifi credentials in it (or will have in the future): - sale of used smart TV - thrown out wifi range

People throw away or resell other stuff as well that has Wifi credentials in it (or will have in the future): - sale of used smart TV - thrown out wifi range extenders - used wifi enabled cameras - your smart fridge, toaster, whatever You will not get Google Home Mini / Alexa levels of security with these.