No, those shiny app icons are still using folders and files, that part is just being hidden from users to where they have less understanding of how things actua

No, those shiny app icons are still using folders and files, that part is just being hidden from users to where they have less understanding of how things actually work. Phones aren't secretly using Roman numerals or tiny embedded abacuses though. If they were for whatever reason, there would be plenty of value in learning those systems.