Roundabouts are worse for land use though, which impacts walkability, and the safety story for pedestrians and bike users with them is decidedly not great as well.
The what now? Seriously, what in the world are you talking about? Roundabouts are heaven. They physically force drivers to slow down when approaching or leaving them, creating a safe environment for pedestrians and cyclists.
For example, there's no such thing as "running a red light at full speed" at a roundabout, no speeding up to "make the light", etc.
For cyclists specifically, they're amazing, because they eliminate the deadly left-turns. Every turn is a right turn, which is super safe.
Though I've never been in an accident either on a crossing or roundabout, so I can't really judge how true my impression is.
They're much safer for pedestrians than intersections. You're only crossing and dealing with traffic coming from one direction, stopping at a median, and then crossing further over.
Unlike trying to navigate a crosswalk where you have to play guessing games as to which direction some vehicle is going to come at you from while ignoring the lights (people do the stupidest things, and roundabouts are a physical barrier that prevents a bunch of that)
I could handle it as an adult just walking my bike but it would be a nightmare for someone pushing a stroller or dependent on a mobility device.
IMO you are absolutely playing frogger with the gaps in the traffic.
Otherwise you either risk getting run over by a car exiting the roundabout without seeing you; or getting run over by the car that stopped, but was rear-ended by another inside the roundabout.
This assumes a median, which is not present at most smaller roundabouts in the US.