* https://en.wikipedia.org/wiki/HDMI#HDMI_Ethernet_and_Audio_R...
There's no reason to believe this won't be a configurable option on the box itself, but this is a moot point because I have yet to see anything in the wild actually supporting Ethernet over HDMI.
I ended up with a Costco 85" LG and unplugged the WiFi card before turning it on, and so far it's worked very well for me.
I wish I could have voted with my wallet on this.
Unfortunately the LG soundbars - which integrate well with the TV - use a wifi based wireless subwoofer. the soundbar becomes a wifi access point.
There don't appear to be any wired soundbars. I guess a component speaker system + receiver is the solution, which is probably much better sound anyway.
I am just waiting for the first "smart" computer monitor