This might be somewhat accurate for people over 35, but it doesn't sound like any younger people I know. The complexities of the younger generations raised on the internet is something new and difficult to pin down.
The internet allows a person to escape the moderating influence of peer pressure and social norms by allowing one to anonymously be part of many different social groups simultaneously and be a different person in each one. There is no friction in mixing and matching your tribes, allowing a fluidity of identity that carries over into real life. I don't think this is captured by the article.