My question was about why to go and unplug wifi internally

Well even if they don't do it now, these are just a forced update away from using WiFi to connect to an open AP to do whatever they want. I also really hated the fact that there was really no way to turn BT off. Anytime the TV was on it showed up as a BT device ready to connect, and I would get random neighbors trying to and having to say no to random pop ups approving connections. Now these things are sans any type of wireless, and when it comes time to sell them, it will take me 5 mins to reconnect the internal ribbon cable.

Awesome. Did you follow a guide or are you particularly handy and then some? :) (since even with a guide, can mess something up!)

I've been tinkering with electronics for the better part of 40 years so I am fairly comfortable cracking stuff open to at least take a look. The TV's I have (B5) were fairly easy to get into. I unplugged the TV and left it unplugged for a little bit to let all the capacitors drain, then I put it face down on a towel on the floor, took 6 or so screws off the bottom, 1 off the back, then the back panel just pops off because it's held on with some clips. The WiFi/BT module was easy to identify, it has some shielded chips with a shielded ribbon cord going to it. It's on the bottom right hand side if you're looking at the back. I unplugged both ends of the ribbon cord by pushing the clip holding it in back/up. Obviously try all of this at your own risk if you're going to. If you're used to opening up and messing with electronics, it was not that hard or time consuming.

edit: one thing I will add is that I was extremely careful moving the screen or pushing on it while working on it. I have heard the super-thin OLED panels are easy to crack from just a little bit too much force.

Love it!

Probably worried about things like spectrum wifi. I don't know if others do it, but spectrum will sell access to a private WiFi network using their customers Internet as a backend.

LG could be using that sort of network.