It is fascinating to see so many open-source alternatives trying to find a solution for P2P file-sharing, with no sort of inter-op possible, just like Apple's AirDrop and Google Nearby Share are incompatible with each other.
OSS projects try and bridge the gap. There’s NearDrop for receiving Google’s Nearby Share on MacOS, and opendrop for sending Apple’s AirDrop via Linux (There’s also an android app that you have to build yourself that does the same, though I can’t remember it’s name).