Hmm, I mostly agree, but it's important to remember that a bad mechanism can encourage bad behavior as well. Facebook must make choices about design of the feed algorithm that have important effects on incentives and behavior. So even if they take a minimal censorship role, we cannot ignore the effect of the feed algorithm - in fact, we should focus on how to design it!
For example, the extent to which one "bubbles" users into their own echo chamber is largely up to the algorithm designer. If you look at "content aggregator" sites like HN, reddit, Facebook, they all have pros and cons. HN and reddit give incentives in the form of karma. They all have different levels of "bubbling" and opting into or out of bubbles.
Good design of such sites is an open problem -- even formalizing good goals for such sites is an open problem -- but it is a design problem we should be thinking about and addressing.
For example, the extent to which one "bubbles" users into their own echo chamber is largely up to the algorithm designer. If you look at "content aggregator" sites like HN, reddit, Facebook, they all have pros and cons. HN and reddit give incentives in the form of karma. They all have different levels of "bubbling" and opting into or out of bubbles.
Good design of such sites is an open problem -- even formalizing good goals for such sites is an open problem -- but it is a design problem we should be thinking about and addressing.