For this use case, not only do channels add an insane amount of overhead, they're also broken in all sorts of way e.g. there is no way to properly clean up reso

For this use case, not only do channels add an insane amount of overhead, they're also broken in all sorts of way e.g. there is no way to properly clean up resources around the iteration, and they add more opportunities for race conditions since the object under iteration has to be shared with the channel's producing goroutine.