The TV would definitely spy on you, the connected device might not. And even if it does, you can pick one from a company you mind less, or who you've already given up on trying to prevent spying on you. For me, that means a Chromecast; I haven't managed the effort to de-Google, and most of what I watch is Youtube anyway. For some that might be Apple, who is probably the least egregious offender among the big companies. Or you could use a Raspberry Pi or other small computer and have even more control, at the cost of being higher effort.