There is no ambiguity in practice because these only happen on T intersections. These rules also apply on low / moderate traffic + intersections with no issues mainly because you are expected to pay attention to the road and not just breeze through every intersection like a maniac.

There is ambiguity in practice. Accidents do happen in roundabouts and t intersections without anyone driving like “a maniac”. The point is that the article doesn’t really discuss the drawbacks of roundabouts of which there are many.

I was referring to the "give way to the right" theory, not the roundabout theory. Which you also must give way to your right.

If humans are involved, of course there are problems, because humans are error prone, the question is if its a problem, which from my limited experience of 30 years of driving is not a significant problem in Australia.

When you approach a round about you must slow down, check your right, and then proceed. It works the same as a stop or yield sign.

In a 2 lane roundabout both lanes should be free before moving into it.

I mean, you can't rely on stop lights either. I've seen plenty of people run reds. What do you do then?