The most maddening advertisement is the one that is forcibly inserted in the menu between the apps and the settings. Using the remote, you must literally click past an ad to switch inputs.
You ... must ... click ... past ... an ... ad ... to ... switch ... inputs. Every time.
Unbelievable for a TV that costs this much. I almost returned it, but as the author notes, the alternatives have worse picture quality and often aren't any better in the ad department.