Combo is just short for combined or combination, but yes, people do refer to CCS specifically as a "combo plug." Saying a "combo station" shouldn't be confusing. Maybe it is. I think, technically, EVgo calls these "Freedom Stations," so I guess I could have called them that.
I did specifically ask EVgo, but it wasn't just me. They have been making an effort to upgrade their sites. I don't know how they are prioritizing locations, but they are doing it.
https://www.evgo.com/about/news/evgo-upgrades-20-fast-chargers-nations-largest-fast-charging-network/