I have a 13-year-old brother with ODD. And let me tell you, there is more to it than a healthy does of anti-authoritarianism.
We adopted my brother when he was 15 months old, and in his first year of life we suspect he was frequently neglected, leading to attachment issues. Basically, when an infant's needs are not met, they get distressed, and the more often this occurs, the more those neurological pathways become ingrained in their brains. Which means that people with a traumatic early childhood are much more sensitive to stimulus, feel threatened easily, and very quickly move into "survival mode". In survival mode, we will all lie, cheat or steal because our survival is at stake. Kids like my brother spent a disproportionate amount of their time in this state.
They also learn at that young age that their needs are not going to be met, and so they come to distrust authority and other people, focusing on looking out for themselves (since no one else is going to). They also tend to fail to internalize social norms and rules like being honest and the "golden rule". These sorts of tendencies can be considered anti-authoritarian, but it is a reactionary anti-authoritarianism, not a healthy, well-reasoned skepticism of prevailing authorities. The latter is healthy, the former is not.
So while it may be the case that anti-authoritarian individuals frequently are diagnosed a mentally ill, it is probably much more common that some kinds of mentally ill individuals happen to be anti-authoritarian. I.e. causation moves from certain types of mental illness to anti-authoritarianism. Basically, I'd like to say this is an interesting article, but please don't walk away thinking that the entire system is just a ploy by The Man to keep the Lisbeth Salanders of this world marginalized. It is much more complicated and difficult than that.
On a personal note, it can be very painful to love someone with issues like ODD. It requires loads of love, patience and restraint. It can also be very rewarding.