The Apple TV "app" on smart TVs like Samsung and LG might be missing "Apple TV Apps" as the "app makers" have to approve non-apple devices. To many "apps" in that sentence.. lol
Since most streaming services don't want to pay the Apple tax, you will have to enable their streaming apps within the Smart TV causing login and billing fragmentation for the consumer. As an Apple user, apple is the horses arse here, i hope where ever they sell their products those stores take a 30% cut on the apple products they sell, it would only be fair.
So, if you want a single place to search and select shows for HBO, SHO, Hulu, Amazon apps you will want an Apple TV 4k over the Samsung App. Netflix is kinda having a temper tantrum over all of this, so they don't really enable the search within Apple TV or now allow AirPlay from tablets to anything.
I don't like the Samsung advertisements so I don't allow the TV to connect to the internet and will continue to use an Apple TV for the foreseeable future. I don't really like the idea of paying for the pleasure to watch advertisements and the expensive of the Apple TV just to avoid the endless drug and political advertisements is worth it. I'm perfectly okay with watching or listening to them OTA TV and Radio when i'm not time-shifting it.
Jim