Let's imagine these features are extremely effective and widely adopted, and the advertising market evaporates. What do people think is going to happen to the content ecosystem - suddenly all the low quality ad sponsored clickbait will disappear?

Personally, I think if the only way to earn a living is to convince people to pay for content, we will see much more polarization as consumers self select into their information silos, and producers are incentivized to produce content that flatters their readers sense of superiority and/or aggrievement.