Earlier quoted context omitted.
If you’re not on Apple you and the recipient have to happen to have agree on and install same one of 37 different ways to do this. It’s not seamless.
That's a feature, not a bug. Why should I have to be locked in to a proprietary file sharing mechanism that my device manufacturer unilaterally declares I must use?
There should preferably be one open protocol for proximity based wireless ad-hoc file sharing. This protocol can then be implemented by operating systems and/or userland implementations