> They're distinct editors on macOS which I'm currently using Nope, they're one and the same, from Mavericks† to Mojave: $ ls -l /usr/bin/vi lrwxr-xr-

> They're distinct editors on macOS which I'm currently using Nope, they're one and the same, from Mavericks† to Mojave: $ ls -l /usr/bin/vi lrwxr-xr-x 1 root wheel 3 24 Jul 10:56 /usr/bin/vi -> vim `vi` merely starts `vim` in compatible mode (see `:help compatible`) † I actually booted a fresh Mavericks VM just to be sure, but I'm quite certain it's also the case way back to at least Tiger (which is the first OS X I ever had)