I have numbered each thing in your paragraph that I would like to talk about.
1. She can still be the crazy party pony she is, yet still be sensitive to other peoples feelings. (example: A friend indeed, and party of one)
2. She isn't just the more fan liked parts...she's also can be other parts
?????? it's hard to understand what kind of point you're trying to make.
3. Oblivious and socially awkward? Oblivious to people's feelings, yes sometimes. However, socially awkward? Is this the pony we are talking about that says hello to everypony, sings, socializes and communicates, as well as wants to be around the other ponies most? If anyone is socially awkward it's Fluttershy, she cowers at just the thought of being in front of people. She's extremely quiet, and is way too afraid to ever express her opinion loud enough. Yes Pinkie Pie did grow up on a rock farm, but if you see how she is right after she earns her cutie mark, she is 100% different. Her hair poofs up, and she knows what she wants to do, which is having fun, laughing, throwing parties for other ponies. What kind of socially awkward being would want to throw parties?
4. She gets mistaken by jerky because others see how nice shes always is so when something small like this happens they think it messes up her character...
When its not even true... (My opinion)
I want to first say, I completely respect your opinion, but it's actually quite hard to decipher what you are trying to point out. She gets mistaken by jerky? How nice she's always is? I don't think "PartyWithPinkie" was saying it messes up the character at all, all she was saying is that they are backtracking with her character. I respect your views, I get you think she's sensitive, and was sensitive to begin with, but there are instances where she wouldn't exactly understand the proper thing to do in certain situations.
5. *Taught
And what was she taught to repress?