You misunderstood. Otherwise the whole article wouldn't make sense, she clearly states that it still works fine on new devices. Compiling with the newest versi

You misunderstood. Otherwise the whole article wouldn't make sense, she clearly states that it still works fine on new devices. Compiling with the newest versions of the libraries/tools can be a lot of hassle including downloading/instaling multiple GB's The newest OSes will run apps made with earlier versions of the libraries/tools fine, up to a point of course.