But like... why? This article literally does not explain the benefits beyond copying, they are just assumed. I'm not immediately sold on shorter === better, especially when the updated UUIDs are only marginally shorter and you have now introduced the overhead of a translation layer for one of the most basic building blocks in your application.
Let's say you have a customer with that UUID as their ID. Do you expect them to recite their UUID perfectly to you every time? What if they made 5 transactions, each with their own UUIDs and you need to look them up, do you now expect them to read out 6 fairly unwieldy IDs?
The article is about the UX of UUIDs. Yes, there's a translation layer and more dev work to implement, but the shorter size and use of non-ambiguous characters is a massive improvement in the usability for the end users.
Also, you don't explain why copying isn't good enough, you just reject the article's reasons