On my old Samsung TV, if I inadvertently push the "Smart Hub" button in the center of the remote, the bottom 20% of the screen gets overlaid with what looks similar to a MacOS Dock with the default apps from 2012. Worked OK in 2012 when I bought it and used Netflix a few times, but a month later I bough the original Google Chromecast, plugged that into HDMI 1, unplugged the Ethernet cable, and never intentionally pushed the Smart Hub button again.

I didn't push it again because in about 2015 I found that if you push it, it locks up for exactly 30s, which is how long it takes to hit the network timeout and say "Updates are available for your Samsung Smart TV." and then allow you to use the ancient web browser or Netflix or other smart apps. I did try a couple years ago, on a whim, but apparently the update servers have moved and even when plugged into Ethernet it can't actually update.

Everything currently runs through the Roku, the Blu-ray player, or a component-to-HDMI dongle for the Wii, but if I didn't have the Roku I'd have a motivation to update so that Netflix would work without a 30-second delay (and I'd be unsurprised if Netflix wasn't backwards compatible with their 2012 client from a Samsung TV). However, the picture is fine, so it keeps on chugging.

Think of it as unpatched computer on your network, possibly with a built in microphone and camera.

Why put it on a network?

Are there any open networks in range? How do you know it's not jumping on those?

My Samsung TV auto-updates. It's infuriating as I cannot disable it.

Just disconnect it from your network (change the wifi password or remove the Ethernet cable) and it will be unable to auto-update.

You may want to get an external device (Roku, Chromecast, Apple TV, or other media server) and plug that into your HDMI if you use the network from apps on the TV.

Just wait 'til they get a blanket connection to Amazon Sidewalk for their nefarious deeds, and the only way to disable it will involve a soldering iron.

But if some apps are used that isn’t possible. I’d suggest a few all rule forcing all port 53 traffic through a Pihole, then block Samsung traffic.

Then...don't use the apps?

What can the apps on your TV do that a $40 Amazon Fire stick ($50 if you want 4K) can't?

I'd rather hook up an old laptop to my TV and use that to watch media than use the apps on my TV and deal with all the bullshit that TV manufacturers are doing when you connect the TV to the network.