I used to live nearby! Loved that silly thing, just don’t treat it like one big roundabout - it’s six chained roundabouts that you can use individually; both green and red routes are valid and legal for the same destination:
My town built lots of roundabouts, and the population are used to them, but they have a problem with unbalanced traffic, and it's been growing, so traffic has been getting more unbalanced - more people coming from directions the engineers who planned the road didn't expect
The real problem, of course, is that though they are trying they are not able to replace the traffic with mass transit. The buses get stuck in the same traffic, light rail seems impossible, even with political will
Saving the operational costs of traffic lights is the biggest pro of roundabouts. Cars inside a roundabout always have priority and cars who wanna enter it have to yield.