Audio over HDMI or DP has never been anything but a nuisance on my windows workstations. Windows finds a way to set the speaker monitor/mic as the system defaults at least once a month for me. Every GPU driver update I end up disabling the display's audio in device manager. Hrm... maybe I could write a script to do it at boot.

I think it could make sense in budget friendly setups, but... personally I'd pay extra to not have to deal with the nuisance and security risk of microphone input I can't physically disable.