That is correct! Every AP by default will broadcast the same SSIDs that the AP group is configured to broadcast, whether it's a wired backbone node or a wireless node — a client can't even tell the difference.
The magic happens underneath the hood. There's a hidden "mesh backbone" SSID that Ruckus AP's use internally to securely tunnel data from mesh nodes to a AP that has wired access to the network.
So, it achieves the same end-user effect as what's commonly called a "Repeater" or "Network Extender", except Ruckus's SmartMesh implementation is a lot better performing, respects QoS/prioritization, and self organizes to the most efficient arrangement. Even if an AP goes down, the other nodes will quickly rearrange themselves to route around the failed node.
I've set up such a network with 2 wired AP's and 4 unwired AP's for a large house that wasn't wired with ethernet. They've got security cameras near the meshed AP's that have been streaming video continuously for 3+ months without a hiccup. SmartMesh is very effective and reliable.