I think it's what we call "Kreisverkehr"
No one calls it that. No one.
Well, there's at least 80 million germans and problably some austrians and swiss people that call it that.
And I remember some 20 to 25 years ago when the first roundabouts/rotaries/whatever were introduced in Germany, people had the same reservations and complaints like most have in this thread. Let me tell you, no one wants to have their intersection back once they have learned the advantages of a roundabout.
And the argument that it doesn't work because of dumb people is invalid because dumb people fuck up every traffic situation, it's because they are dumb.