If the number of phones is small maybe. Though I doubt they can just throw lithium batteries in a landfill in the EU.
There are manufacturer’s that produce different phones with the same name and different hardware for different regions but I could not find concrete info if there’s actual hardware differences for iphones.
But visudo can use any editor if you set SUDO_EDITOR or EDITOR variables. If you don’t want to use vi(m) you should probably set EDITOR in your .bashrc and visudo and probably other programs will use your editor of choice.