Well, TV sets defaults have been tailored for the maximum showroom impact (loud colours, flashy effects) since... about forever ?
Plus ordinary people don't give a sh*t. Most people can't see the difference between HD and 4K (remember that in developed countries, most people are over 40, and 25% overall suffer from myopia). In the 00s, people all had 16:9 TVs and watched 4:3 programs horribly stretched without batting an eye. Most Full HD large screens suffered from horrible decoding stutter late into the 2010s.
Plus ordinary people don't give a sh*t. Most people can't see the difference between HD and 4K (remember that in developed countries, most people are over 40, and 25% overall suffer from myopia). In the 00s, people all had 16:9 TVs and watched 4:3 programs horribly stretched without batting an eye. Most Full HD large screens suffered from horrible decoding stutter late into the 2010s.