He is prodigy of Michael Schumacher. Sebastian has in fact mixed it up quite a bit this year in wheel to wheel fighting. My view on some of those outcomes is somewhat different to the popular media interpretation e.g Instanbul.
HE was alongside Webber yet Webber continued the squeeze. Webber should have ceded the racing line and being behind Vettal it was his duty to keep clear. He did not, and the rest is history. Spoilt child? well, I hold the view that if you have certain values and understanding of the sporting rules and driver code of conduct then you expect others to follow the same. The incident is more due to Vettels naivity and youth thn poor race craft. He expected his team mate to abide by the code of conduct he did not.
Thereafter ,his team mate constantly campaigned to be the teams number 1, something Vettel never requested and to my knowledge, expected. He grew up a bit after that incident.
He bacame more cautious and that affects your aggression in racing. he toned it down so as to not get involved in further incidents. The pressure of being a championship contender is now behind him, his race craft will be a little more self assured and I bet Webber won't be able to try to out politic him going forward....and Webber knows that.