I almost feel like this a somewhat pointless feature. It’s almost easier to just learn the default ones as opposed to adding “-modernbindings” or creating an “enano” variant/copy.
So “some other bastard system” it is, then.
That’s a shame; a GNU project should be consistently GNU-like (i.e. adopt Emacs key bindings).
If Emacs keybindings are good enough to be the system default for Mac users, they should be good enough for anybody.