Yes, that part is true. I wanted to get a Sonos Beam Gen2 sound bar for my TV, and realised it support Dolby Atmos Audio. Now, I kinda want to buy the Apple TV 4K just for Dolby Audio support, and replace the Mac mini with it..

But, even for that, I personally would not let my TV connect to the Internet and ruin my teaching experiences with ads.

Like most things in engineer's life, tradeoffs and people choose to trade different things.....