They’re not so bad, once you get used to them. It’s just a matter of yielding to traffic in the circle, rather than blowing through the yellow light right as it turns red in a conventional intersection (as I’ve done numerous times).
There are reports of people being trapped in traffic circles till their gas runs out. Same for the skyways in Minneapolis. People have been seen wearing tie dye clothes and bell bottoms and reading papers with headlines about the ‘76 election and Harmon Killebrew hit another home run.