It's important to keep in mind that the difficulty of learning a language is based on the languages you already speak. Finnish is a good example of this, as while Finnish children are able to learn it quickly due to its regularity, English speakers may struggle with how different it is (especially with some almost entirely unfamiliar concepts, such as the partitive case, which has no direct English equivalent)
The reason the alphabetical order is like that is because it was passed down all the way from the 14th century BC and potentially before, so a lot of sound changes and mild order changes happened (like Z going from the letter after E to the last letter) and you have the modern English alphabetical order
Considering I'm part of gen Z (it's not all young kids) and can competently navigate a computer, I'd consider myself to have seen a member of Gen Z do it.
However, it's true that there's lot of people in Gen Z who can't navigate a computer well, since it's not really needed anymore. Many people can do everything they want on a phone, and only need computers for certain things.
That's a feature of a very old German hand writing style that hasn't been used much since WWII