My problem is that all these alternatives require the devices to be on the same local network. One beauty of Airdrop is that it creates and handles that local network automatically under the hood (as far as I understand). So you could be out on a hike with friends and Airdrop something. The workaround I've found after switching to an Android device has been to teather my connection to my friend's device, which ends u…
Wireguard VPN to your home network, and then you can do anything
That's an even worse solution than the hacky workaround of just teathering my internet connection.
The whole point of these solutions is to not have to transmit data over the internet, it should work over a local dynamic connection.