Mark Zuckerberg believes that presenting differing personas to different audiences displays "a lack of integrity"[1] and thus Facebook is deliberately engineered to encourage an individual to present their "true" self to all "friends" equally.
I guess it's edgy to dismiss celebrity outright, but Mark Zuckerberg is the steward of one of the largest social phenomena of our time, so I should think it matters a great deal what he believes--not necessarily because we should agree, but because of the potentially significant effects of those beliefs.
I agree. It's important to criticize him. Harshly. He's the harbinger of a change whose proportions are yet to be fully understand, but it's like we're all living guinea pigs of his experiment and happy to be that.
I don't see how we can be fine with putting a self-declared mildly autistic little genius in charge of defining the nature of social interactions in the new millennium. "here's what I think relationships should be like", says such child playing with his own huge money-churning game.
In contrast, WeChat (which is the closest equivalent to Facebook in China) has a number of features that are specifically tailored to allow for these different social contexts. For example, comments on a post are only visible to you if you're friends with the commenter, not just the OP. [1]
That doesn't change the fact that no one wants to see their loved ones behaving in undesirable ways. If you abandoned anyone who behaves poorly when enabled by Facebook/alcohol/$VICE, rather than helping them, then you wouldn't be left with many friends or family.