This seems to be a problem with social media in general. It doesn't encourage us to be our authentic selves but instead forces us to constantly be only who are allowed to be under scrutiny from others (usually strangers) - not the same thing. The fear is that with so much more of our lives getting scrutinized, the project of becoming an individual might become less and less possible.
The difficulty with being perfectly honest is that you might find out that you're honestly wrong. When technology amplifies our voices to the whole world, those private revelations become public spectacles.