In general, yes.
But in case of LG TVs, they record your activities in EU too. You can opt out, but the settings has a very non-descriptive name ("live plus") and resets by itself when you are not looking.
https://www.consumerreports.org/electronics/privacy/how-to-t...
At least with LG TVs you can just not give them the internet and nothing of value is lost (at least assuming you have an Apple TV or other trusted smart tv capability). Much more difficult to not give the windows PC internet and have it be useful (at least mine is only used for gaming).
Right, I'm wondering about the amount of ads though.
No, I think the ads are limited to own services and third party apps right now. Same goes for Samsung in EU.