I was able to resolve the wifi issue by resetting the region to another and back and turning off the auto setting for it, but frankly it’s appalling an update can go out that breaks something as basic as Ethernet.
The fact a premium TV shows ads is appalling. Does LG really need to sacrifice their brand reputation just to get that advertising revenue? Whoever is calling the shots for this decision should be fired.
Money can buy reputation, so as long as the revenue from ads exceeds the cost to repair reputational damage, this will continue.
This is also a case where the manufacturer takes advantage of the unstable software Zeitgeist to gaslight users into thinking this is just how things are now, it's normal and natural and if you don't like it you're old/disruptive/weird.
Is it a security hole? Probably. I have it siloed away from my network on its own router with its own subnet.