Is it legal to pass another vehicle on the center divide of a road?

This morning my wife and I were on our way to go canoe paddling.
A car tailgated our Ford F-150 into a roundabout and then passed us by crossing a solid yellow line and into the center divide of the rode while I was accelerating out of the roundabout.

I’ve never seen that done before and I’ve been driving for 57 years.

My wife said that she didn’t think it was illegal but according to:
driverseducationusa.com

“Passing is illegal when “The center line is a double solid yellow line or there is a solid yellow line on your side”.

See my dash cam video:
https://www.flickr.com/photos/48774809@N07/53494947950/in/dateposted-public/

Thanks.
Drive safely.