Not in support of the above poster's views btw, but I think he gave the analogy in a broader sense. Your take on this mirror analogy is from a micro-level. I still think looking at FB from a birds-eye view, the society mirror assessment is fairly accurate.

That is a fair point, though in the sense of "mirror, mirror on the wall, who is the fairest of them all". People end up in bubbles because they're most receptive to particular type of content and that is what they end up engaging with. But yes, if it was up to me, I would kill the Share button and get an unfiltered view of my connections' updates, like in the early days.

Exactly. Arguably the algorithms are optimized for engagement, but it’s like saying opioids hold a mirror to society because so many who try them keep seeking them out.