I will not chew this a**h*** out, I will not, I will not, I will not...
Okay, can I just address the claim about helping people and social change?
Here we go:
In society, each type and type family has a series of roles that they're naturally inclined to and excel at: SJs preserve and consolidate, SPs forge and create, NTs innovate and organize, NFs mentor and advocate.
This usually means that SJs usually concern themselves with society, SPs with action, NTs with systems, and NFs with humanitarian causes. It's not that they can't have other interests, but in broad terms these are usually their primary preference/orientation.
So, all types help people in different ways. Specifically to this thread,
NTPs help people by changing/refining systems. Thomas Jefferson is a good example of this. NFPs help people by
advocating humanitarian causes. Joan of Arc (INFP) and the American Women's Suffrage Movement (begun and lead by ENFPs) are good examples of this. NFPs would have a harder time with changing/refining most systems and NTPs would have a harder time advocating these cause. While NTPs are a bit better at problem-solving,
NFPs are a bit better at emotional appeals and rallying support.
In other words, you're full of ****.