I don't think this is solvable, or indeed even a problem to be solved. Our definition of "better" probably overlaps quite a bit, but it decidedly does not with many, many people. There are a lot of people who really enjoy "memes and low-effort content".
The reason it takes effort on behalf of the user is because there's no such thing as a perfect read-your-mind content recommendation system that doesn't require any inputs from you, as much as people like to pretend machine learning is magic. Twitter/Reddit et al are a tool for building a content stream that fits you perfectly: their recommendations aren't intended to be blindly and indiscriminately consumed, but to narrow your search space to make the construction of this stream possible in the first place.
This is a simple extension of the trend of broadening distribution we've seen, from having three broadcast channels (all reporting the same news with the same slant and the same blind spots), through cable television, all the way up to today's wide-open, bottom-up distribution system. The root of this type of complaint about social media is that they treat their users with too much respect, trusting them to have the emotional continence and intellectual maturity to build a custom content stream that fits them instead of being told precisely what to believe and what to care about by Walter Cronkite.