You absolutely can. But you'll want to pay attention to how insistent the TV is when it comes to being disconnected from the internet. I have an offline Samsung that will occasionally prompt me to accept the terms of service, which obviously fails because it's offline. I can imagine there are some brands/models that are more pushy.
I have a Samsung oled from 2022, I think S95B. It’s technically connected to the local network (I still want it to be usable with home assistant), but denied all connections at the firewall level. I don’t recall it bothering me about anything, and I pretty much always turn it on directly into Apple TV.
I’ve been very happy with my Sony in this regard. Its OS is extremely basic Android TV and it doesn’t bug you at all if you don’t connect it to the internet. Newer models than the one I have also come with a “basic TV” mode that disables most of the Android TV bells and whistles.
Yeah Sony means a higher price, so it’s not going to be as cheap as some other options, but peace is worth a lot of money in my opinion…
