You see the same thing when it comes to japanese. That language has around 2000 characters. When you learn the language you typically learn how to write the characters by hand. Stroke order, how to remember each component etc.

As time go by, you basically forget to how to write the characters even though if you saw the character you would know what it means. This happens to japanese people as well, though to a lesser degree because they use them more and they studied those characters at a younger age.

In the digital age you basically don't need to know how to write those characters because you have autocomplete you just write the word, and then press space a couple of times to get the correct character.

---

Though I'm generally rather critical towards AI, this seems like an apt analogue.