90% of my YouTube use is on my smart TV. There's not really a straightforward way to block ads there. Used to be many years ago that a PiHole or similar would work, but they clued onto that years ago.
I spend less in nominal terms, let alone inflation terms, for my tv entertainment now than I did 20 year ago, even with Disney, Netflix, bbc, Paramount and YouTube subscriptions.
It periodically has issues loading videos when Google change something, but the app gets updated every time within a day.
There's also this email from YouTube support: https://www.reddit.com/r/youtube/comments/1gnaetv/paying_to_...
It reads:
> While YouTube Premium provides an ad-free experience for most content, promotional ads can sometimes appear for specific partnerships or limited-time offers. These promotions are often targeted based on various factors, including your location, viewing history, and account settings.