Asynchronous operations can be retried until the network returns without blocking the UI.

Not when they require user validation like making sure a photo updated correctly

If you drive away from the delivery before that photo is uploaded, then you risk not having the proof that you delivered the package successfully

That is actually worse for the driver than having to wait for the upload so they can retry immediately

The proof is still on the phone. The photo doesn’t magically vanish because the driver moved on while the network was disconnected.