It used to be that one of the big selling points of Mozilla/Firefox was that it could run on almost any OS!
What happened to all of that?
Not having to ensure compatibility with really old operating systems enables the developers to spend more time adding features and capabilities, for one.
If you push the "extra ice" button on the soft drink vending machine, you won't get any ice. If you push the "no ice" button, you'll get ice, but no cup.