... it is impossible for an ESFP to think critically and abstractly, and therefore it is impossible for an ESFP to be "intelligent", as per the traditional definition of the term.
Dear Perch420,
Allow me a minute to address you directly here. Your conclusion, that it is impossible for an ESFP to be "intelligent", depends upon the truth of your premises and on the validity of your argument.
So let's examine your argument.
To boil down what you are saying, it reduces to this: "Since human intelligence is defined as possessing critical and abstract thinking skills, any humans without these skills are stupid, and it impossible for an ESFP to possess these skills, therefore all ESFP's are stupid."
Let's see if this holds up to scrutiny.
Premise 1.) Your definition of intelligence is the possession of "critical and abstract thinking skills". Is this an accepted definition of intelligence? No; incomplete.
Let's examine a number of authoritative sources to see what intelligence is defined as. I will use (for convenience's sake) the website
www.dictionary.com.
in·tel·li·gence   
–noun
1. capacity for learning, reasoning, understanding, and similar forms of mental activity; aptitude in grasping truths, relationships, facts, meanings, etc.
2. manifestation of a high mental capacity: He writes with intelligence and wit.
3. the faculty of understanding.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2011.
World English Dictionary
intelligence (ɪnˈtɛlɪdʒəns)
— n
1. the capacity for understanding; ability to perceive and comprehend meaning
2. good mental capacity: a person of intelligence
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Medical Dictionary
in·tel·li·gence definition
Pronunciation: /in-ˈtel-ə-jən(t)s/
Function: n
1 a : the ability to learn or understand or to deal with new or trying situations
b : the ability to apply knowledge to manipulate one's environment or to think abstractly as measured by objective criteria (as tests)
2 : mental acuteness
Merriam-Webster's Medical Dictionary, © 2007 Merriam-Webster, Inc.
intelligence in·tel·li·gence (Än-tÄ›l'É™-jÉ™ns)
n.
The capacity to acquire and apply knowledge, especially toward a purposeful goal.
An individual's relative standing on two quantitative indices, namely measured intelligence, as expressed by an intelligence quotient, and effectiveness of adaptive behavior.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Your definition is too narrow and vague to be an accepted definition of "intelligence". Therefore, premise 1 is incorrect.
Premise 2.) As per my paraphrase: "any humans without these skills are stupid"
Since your definition of intelligence is incorrect, we cannot conclude that humans without the skills you list are indeed stupid. Even if we collectively agreed upon a definition of what constitutes intelligence (as above for example), stupidity still would have to reduce to a set of observable actions to induce us to agree that someone is indeed stupid and lacks intelligence. And if we can't use actions to agree upon what defines stupidity, we would have to then try to agree on other objective measures, like IQ for example, to help us define intelligence vs stupidity. Yet if we use IQ then as a measure of intelligence, it has been demonstrated that high IQ can be found in all types, with a relative percentage of probability. (need to look up source). Yet even that percentage of probability is potentially biased, however, due to the preference of some personality types to testing of any kind. So, this data is potentially skewed as well. (See how slippery this slope is?)
Premise 3.) Again, as per my paraphrase: "it impossible for an ESFP to possess these skills" - since your definition is incorrect in the first place, again this extrapolation is incorrect. But, let's go with a more authoritative definition of intelligence instead, as above, for fun.
in·tel·li·gence   
–noun
1. capacity for learning, reasoning, understanding, and similar forms of mental activity; aptitude in grasping truths, relationships, facts, meanings, etc.
2. manifestation of a high mental capacity: He writes with intelligence and wit.
3. the faculty of understanding.
Anecdotally, I can say with certainty, I have witnessed on numerous occasions ESFP's demonstrating a "capacity for learning, reasoning, understanding, and similar forms of mental activity; aptitude in grasping truths, relationships, facts, meanings, etc. etc." In fact, there's nothing in the above definition that excludes any ESFP from possessing these skills. Therefore you cannot conclude ESFP's, as individuals or as a group, are not in possession of intelligence. You would need to study a large group of verified ESFP's to make such a global conclusion. Have you done this? No.
Can you say you have met an ESFP who fulfills the criteria for intelligence? Perhaps not. Impossible means 0% probability. But you are 15, your worldly skills are at a novice level, your ability to type others may be flawed, your perception of type skewed. You don't know because you do not yet even know yourself. Think on that.
So finally, your conclusion: "all ESFP's are stupid" ...
BUSTED. Just totally busted. Your premises are flawed at best, and just out and out incorrect. Come up with a better argument, and someone might hear what you have to say. You better have some hefty evidence on your side though.
And hey, I get that you are testing out your Ti skills - you come across as a growing, exploring young INTP to me, but you still need some Fe in there, or you risk alienating everyone so that they won't even be interested in the first place to try to follow your train of thought.
Good luck to you; try not to get banned.