I don't even understand the pitch? you have the disc playing, in your hands, your ownership, no buffering, no subscription required. and they're saying....hey do you want a worse experience?
Even if you must own a smart TV (because it's impossible to buy a large-ish TV anymore that isn't), I see no reason to actually connect it to any network. But! I notice recent models will bitch at you on every single power on if you leave them disconnected. So you're not even safe from being annoyed then.
That's the route I took. I recently bought a 48" 4K monitor, hooked a mini PC up to it, and now I stream my movie and TV show collection through Plex. I still have Internet access on my "TV," but I'm in control of what pops up (I block all ads on my home network). I just use a small wireless keyboard and mouse instead of a remote.
I haven't actually owned a TV since about 2008. I have better media options through computers, and the technology just keeps getting better. Cable and public access television are a pain because you're constantly bombarded with ads. With my own computer, I can circumvent ads and get a solid viewing experience.