Agreed. We have a dumb Sony 40" LCD that is over ten years old. It's not 4K but our eyes aren't good enough to see the difference, and over the years we've used

Agreed. We have a dumb Sony 40" LCD that is over ten years old. It's not 4K but our eyes aren't good enough to see the difference, and over the years we've used a range of front ends - currently a Raspberry Pi running Kodi (with the HiFiberry sound card - awesome!). This has been very economic, and environmentally friendly, and I can't see why we can't continue for several more years with the same screen.