Currently reading a book about how due to the interconnectedness of social media people will have to develop 'middle ground' personas across platforms that will be suitable to all audiences.
An example of this is needing to post things on Instagram that are suitable to a potential partner, employers, people you want to network with, friends and family, and of course for yourself.
Whereas in-person you can be one way with your parents and another way with your friends, online due to the limitations of platforms and the various stakeholders checking them; you need a persona that is both representative of you and suitable across different life sectors.
In-person you get to have a background and foreground personality. The diversity comes from the setting, situation, who else is present in the room and the social mores that are appropriate. The nuance and diversity of your personhood and identity that can take place in-person just can't happen in the same way online.
Online everything is "foreground" or public facing therefore you have to present a middle of the road identity that is a less nuanced version of yourself.