If you look at the history of the Public Broadcasting Act [1] that established the CPB and eventually PBS, it seems clear that it was passed in response to poorly-funded educational programming not being able to compete with high-budget commercial network TV. Its authors wanted to make it easier for smaller, non-commercial entities to produce and distribute high-quality educational content. In that regard, the Intern…
E.g.: an educational video will be followed by flat-earth conspiracy video if the YouTube algorithm choses so. This sabotages content producers with – in this case – educational intentions, as the platform will make producers compete for attention.
Also, I believe what's been missing in the discussion is how "empowering anyone to push content" is not in itself a value, and that it's in fact possible to add negative value, at a global scale, at very little cost. This discussion won't happen as it's in platforms best interest to promote engagement, and engagement comes from pure controversy.