If you think this question does not show research effort, or isn't useful, I would appreciate a comment giving me feedback for how I can write a better question in the future 🙂

I'm having trouble how your code functions differently from the example code in the question

If you think this answer is not useful, I would love to hear your reason so I can make better answers in the future :)

@Sweeper Task.detached seems to be what I needed. Thank you! Please write that as an answer so I can accept it :3

@dalton_c I do hope so, but I fear it'll be a few months of breaking-errors, feedback that goes into the Void Hole, pushback from the Swift maintainers before they understand the usecases, and grumbling bodges/kludges

@Sweeper I'll try that, thank you. It's in a View's .onChange(of:_:). I agree it should run in the background, but the warning explicitly says that's a problem: "Passing argument of non-sendable type 'AVMetadataItem' outside of main actor-isolated context may introduce data races"

@RoyRodney but then whenever I try to prepare/print anything, the compiler requires me to mark that as async, which then requires I wrap it in a Task, which then adds unnecessary multithreading and no longer guarantees FIFO