It’s too early to tell how useful 2D magnets are for anything other than experiments, since there is more research required to make them work at room temperature.
But the fact that physicists have figured out how to make magnets that are one atom thick, sure sounds pretty NEWWorthy. They might eventually be used in consumer electronics. Perhaps there will be uses in smartphones or computers.
As a person who enjoys the sport of disc golf, I wonder how strong the magnet will be. If I could place a tape-thin-like magnet on my disc, that wouldn’t change the characteristics of my disc, could I then use any kind of extending pole (like a golf ball retriever) with a magnet on the end to retrieve it? Probably not, but it’s a thought.