It's not a product where you are the user. Your attention is the product being sold to advertisers and the videos are a harvesting/production mechanism.
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 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.