>It's irritating that it powers-on many times to the wall art display function versus just being a TV.

I personally love the Art Mode, but while browsing the service menu I've noticed that you can permanently disable it. You can make the secret menu appear by pressing some special combination or by pressing 2 buttons on the service remote[0].

[0] https://www.amazon.com/AA81-00243A-Replaced-Service-Control-...