I am far from all knowing and my power of smiting is limited to bugs in code (stupid superpowers)
Mac users are a special breed, gotta make sure they get on the short bus and take good care of them because Apple is already planning to make their computers obsolete (JK)
the Easy Ren'Py Image and Replay Gallery now has a zip file as well.
rarlab does offer a macOS version (x64 and Arm) of their software (but you have to do it all in the terminal) https://www.rarlab.com/download.htm
I used The Unarchiver on my Mac before converting it to a linux box https://theunarchiver.com/