I don’t have a clear answer for you, though I can ask the developers for hints. If I was troubleshooting this myself, I would start at the nmcli man page and see what other information I could get out of it. Maybe the nmcli radio command is useful.
Yes, actually it was helpful. After powering up the device to read the man page, I went through the steps again, and wifi was worked as expected; so something I did on the machine prior to going through the network setup had screwed things up.