It does appear the new MacBook Pro is Wi-Fi 6e capable, after a specific OS version. Do you know what the model of the Wi-Fi card is? I know basically nothing the Apple computers since the last one I dealt with was the Apple IIe. 😉
Any chance something on your network has the network restricted? Any chance you have the 6 GHz radio disabled or not setup the SSID?
You don't have any other systems on which you could replace the Wi-Fi card and bring it up to date?
I have not yet installed the Beta so I can't verify its capabilities.
Maximus Z790 Hero,