No. No. No. No. No. No. No.
It's not "now" smart enough for malware. It's been that way for a LONG time.
I've been working on some of the backend systems for a few years now. Browsers are just 1 attack vector. The attack surface is much larger.
I've also worked on vehicle backend systems. They're less vulnerable. Take that for what you will.
tl;dr - If it has a computer, or if people are involved, it's vulnerable. But some people already knew that.
Personally, I would much prefer a "dumb" display than a smart TV.
Yes. Exactly that.
Also, I prefer analog to digital. Digital is way too slow. I don't have enough patience for it.