I used to pay for the Youtube Premium as well, because the app is literally unusable on an Apple TV and iOS devices without it, the ads are just too much.

Unfortunately, the premium subscription does not work for the in video ads and promotions (shills) which seems to be everywhere now, so I cancelled my subscription, as I can not get the ad-free experience anymore, dropped the idea of using Youtube on devices where I can not install ublock origin.

edit: The idea is that I can not get rid of ads, even with the subscription, so the value of subscription itself is severely diminished.