While I love my LG tvs, they have had ads on their smart tvs for nearly a decade.

The difference from Samsung is that the ads on the LGs are in the same place they've always been (on the smart tv menu overlay), they've never been obtrusive, and they're always in some way connected to video content (usually VOD movies that you can purchase through one of the streaming apps, or adds for streaming apps you can install on the TV).