I taught people to use computers in the 90s and early 2000s, and having those concepts matching to real world objects helped immensely. Recently I had to teach my kids to use a PC (they no longer teach that in "computers" at school, by the way, iPads only), and everything was arbitrarily designed without even internal rules/consistency let alone building on real-world metaphors.
You've also had this ongoing trend of content density getting consistency worse, and now Apple is accelerating a trend to make UI elements difficult to see/harm discoverability further. Liquid Glass is going to be a painful period, and all the clones that do it even worse are going to be pure hell.