Unfortunately, most drivers I've observed in the US seem utterly confounded by roundabouts, particularly the yielding part. The roundabouts I've experienced - there are several where I live - are mostly single-lane, and are still very nerve wracking to drive around because other drivers behave very unpredictably. Then again, I also see folks struggling with (or intentionally ignoring) queuing for 4+ way stops.
That said, I agree with your points, and I personally prefer roundabouts to queuing stops. They flow so much better, and really help to improve congestion/bottlenecking.
That said, I agree with your points, and I personally prefer roundabouts to queuing stops. They flow so much better, and really help to improve congestion/bottlenecking.