Ubuntu is not Arch Linux. The 6 month release doesn’t give you the “the newest, best and most shiny versions of everything” in the first place.
If they don’t like change so much as to not being able to handle some minor UI updates, then their better off using a Chromebook lol.
You’d just be making it harder for them move from the outdated software in the long run, because literally everything changes between moving LTS from the 5y EOL period instead of gradually over each major normal 6 month releases.