Likewise, if a Linux user needed to open existing .pages files, they’d likely be using LibreOffice as well.
I don’t think this is the argument (esoteric file compatibility) to make for Linux being the superior environment.
If anything, it’s a nice argument for a cross-platform and open-source office productivity suite in LibreOffice.
We didn’t have selfie-cameras, so the only way to do a selfie was to throw your camera with a little spin on a short timer and hope it all looked great when one of your 24 photos were developed on bits of paper some time later…