Sorry, but that doesn't really work. I can expand your terminal answer as much as you did the gui one. You have to open the terminal, use the man page for apt to find out how to search for a packages name, search for a package and hopefully find it, then you need to run another command with that package name to install it.
Meanwhile, I can shorten the gui example to "It take me two seconds to use the search bar and click install"
They all have their ups and downs, guis are just easier and more intuitive for people who don't live and breath terminal commands. Terminals can be extremely confusing for them, having never used one before.
It would completely eliminate the bios issue, would it not? It would prevent them from ever needing to enter the bios at all.