> Even in the best case though, things won’t be as great as they are on Linux or Windows.

Worst case, you just swap out the NS p pselect hack and use a w32-like separate thread. Let Emacs be Emacs and let Cocoa be Cocoa.

NS would be just as good as Windows then. Isn't that bood enough? Maybe this thread splitting is the "deep event loop surgery" the author meant? I haven't been following.