No, a "very green soul" would not be somewhat sociopathic. Inexperience does not make one have a negative attitude or behaviour, that is rather developed over time if the being devolves or it is born into a negative environment that makes it very difficult to develop positive qualities. Besides, there are many variables that makes it difficult to generalise new beings and their internal state, it's not that simple.
I am not certain of my position on this, so maybe lets ping pong this a bit more.
I think the notion of self centeredness being negative is a PMR-centric notion.
In the very big picture, the IUOC moves from a state of individuation, with no organization or efficiency, and that initial state is chaotic, confused, and mostly, obsessed with self and blind to its connection to others....bump focused, sheet blind
So, sociopathology is merely a pure manifestation of this completely green IUOC nature combined with sensor platform DNA nature combined with environmental nurture elements that do not mitigate this natural state with values.
For the life cycle of the IUOC, they do not start out in the middle and drift positive or negative, they start out with absolute entropy
From a PMR perspective, given that all FWAU humans are animated by IUOCs from the complete range of Quality, if may appear that people start out in the middle and drift, but I would argue that this is an illusion, according to MBTOE.
Like the Boston marathon, the vast magority of IUOCs over eternity and FWAUs over a life, move from the start to the finish due to the accumulative impact of experience and feedback - occasionally someone falls or starts running in the wrong direction, but I believe this is rare under the model.
PMR-wise, children start out extremely selfish, with virtually no effectiveness - as they age, their capacity to generate action and results to reflect their quality increases, while at the same time their intent connection to their IUOC quality becomes more efficient, and then begins the slow process of growing QoC - or rarely, not
this is my mental mapping of this...which I am eager to improve