than reproducing a desktop
Oh you sweet summer child 😊
I get what you mean, I really do, but the mobile launcher is very different from desktop.
Let me find an image of what a mobile desktop used to look like. It was literally the original Windows95 desktop, complete with recycle bin and start menu and task bar. Now that does not work on a mobile device, and modern phone launchers are light years ahead of those olden days.
I hope this link works:
Yup. They burn heavy bunker fuel - the sludge that is too bad to be used for anything else.
Considering the amount of shipping, it's horrendous.
But - and there's always another view - I don't know how much energy you'd need to use to haul that much cargo by other means like rail and trucks. One container ship carries as much as a thousand trains could carry. Vessels are really, really large, which make them quite effective.