the reason i disagree with your assessment is because your assessment is frequently made only in regards to A-list actors. ive heard the same argument numerous times about Brad Pitt, Leonardo DiCaprio, Julia Roberts, George Clooney, Angelina Jolie, Tom Cruise etc. the one thing they all have in common is that they are so famous that their fame can overshadow their performances in the eyes of folks like yourself. you say Lawrence is "in her own head", when its far more likely that she is in your head. if you go into a movie thinking "I am watching really famous actor, So-and-So.", then there is nothing they can do to convince you that they are a character.
Lawrence has consistently been praised by other actors, directors, and hell, even editors, for what they call an effortless ability to get into character. she doesnt really rehearse, doesnt learn her lines until she is in the makeup trailer, and doesnt require any preparation before filming a scene. one thing that many colleagues have praised her for is her ability to basically just flip a switch when action is called. all of these things indicate the opposite of what you are suggesting, which is that she is consciously and meticulously thinking about every aspect of her performance as she acts.
TL;DR, you are projecting. big time. it is pretty common for people to do this with specific actors at the top of the A-list. i imagine its no coincidence that you cite her performance in Winter's Bone as an example of her supposedly not doing what you suggest she is doing, considering that film came out before she was an A-lister.
by the way, you must be really sensitive if you consider this an "attack".
edit - also, i looked again at the list of movies of hers that you provided, and it should be noted that nearly all of those characters involve the characters themselves acting in some way. maybe you failed to recognize this.
