When you connect a new device to a 'smart' tv, you must pay homage to the manufacturer with a ritualistic dance. Plugging and unplugging the device. Turning them on and off in the correct sequence like entering a konami code.
Every time you want to switch devices, the tv must scan for them. And god forbid you lose power, or unplug something. You are granted the delight experience of doing it all over again.
I have fond memories of the days of just plugging something in, and pressing the input button. Instant gratification. It was a simpler time.
Analog cable with a cable-ready TV was better than digital cable. No set-top box with bullshit rental fees, no weird lag waiting for it to "boot up" or change channels, no interactivity so they couldn't easily try to upsell you, etc.