If you ever read some av forums, you'll find that modern TVs are about as reliable as modern computers, i.e. it's amazing they even turn on when requested. Features are DOA for new lines and need multiple updates to be useful, sometimes they're completely disabled and only get enabled after a year, e.g. Dolby Vision on 2017s Sonys.
My parents' TV has an incredible anti-feature where, if the video gets dark enough, the whole screen dims temporarily. There's no firmware update for it so they've just lived with it for years.
