At the very least you’re misguided or don’t know what you’re talking about. Passkeys are not vendor locked in and of themselves.

You can make the same argument against password managers because most iPhone users that use them, use Apple’s one.

No, I currently use Syncthing to sync my documents and music folders between my devices. If there’s something else, like the clips I make when playing with friends, the computer automatically syncs them to my Seafile instance with their sync client.

That way I can easily share the folder and check it on my phone using the app. If you don’t encrypt the drive it will show up and be navigable in your files app, without taking space (at least if you use the stock gos files app)

Personally I’m more than happy to cover the Dutch translation if you have the time to get translations working. Thanks for the project!