It is not in the interests of either YT or the advertisers to allow you to opt out of features that are proven to be lucrative for eyeballs.
It seems like the incentive for Premium subscribers should be to keep them happy, so they keep paying, and minimize how much they watch, as they’ll be a cheaper user using less bandwidth.
Am I missing something?
That feature benefits YouTube, too. Maybe even more than its value as a Premium feature. It makes it so that viewers can skip the ads the creator was paid to make without YouTube getting a cut of the proceeds, pushing down the value of those ads.
That said, Subway often seemed to get pretty heavy with its product placement. The last season of Chuck had a good amount of this, even what was essentially an ad read right in the middle of an episode by Big Mike. On Community they personified Subway and based a whole episode on him. In the Office they brought in Ryan Howard to say “eat fresh” over and over again, and even called out that it was for Subway to make sure it didn’t go over anyone’s head. Subway was big on sponsoring the last seasons of struggling shows with loyal fanbases, and littering the episodes with Subway product placement to the point where it became a plot point. I remember Zachary Levi (Chuck) tweeting out to ask everyone to go buy some Subway before the finale. It sounded like if Subway saw enough of a spike in buying from the sponsorship, they might fund yet another season.