Not really the same at all, airdrop doesn’t require you to be on the same network. From what I understand airdrop does an unspec’d bluetooth thing for discovery and then wifi-direct (p2p wifi) for transfer for much higher transfer speeds. Closest thing to achieving this on linux is

GitHub

GitHub - seemoo-lab/opendrop: An open Apple AirDrop implementation written in Python

An open Apple AirDrop implementation written in Python - seemoo-lab/opendrop

but last I tried the wifi card driver I was using didn’t support it. The fact that the open source hackers are so behind on this is a bit sad because the tech is mindblowing.