I wouldn’t usually challenge this but it’s obvious the couch skit was done to demonstrate the degree of accuracy in which you can find your lost items and keys generally go everywhere on a person showing that if you do lose your keys (out in the world) you can find them with that same degree of accuracy. Apple did not create this product or network for you to be able to track every conceivable item that you may misplace one day, but by all means attach air tags to your Siri remote, your lighter, your favourite coffee mug & and your wife if you can’t keep track of where these things end up 😜