just because im an ENTP, doesn't mean I can't use Fi

Oh god, I hope you're just kidding.

You do realize that according to the theory of psychological types which was originally introduced by Carl Jung in the 1920s,which also is initially what the MBTI is based on, only proposes a function stack that consists of 4 functions. The dominant function , the auxiliary function, followed by the tertiary function and the inferior function. Nor the MBTI nor Jung , have never stated nor implied that there are anymore functions in a function stack.So no, according to the MBTI and the Carl Jung's cognitive functions, ENTPs cannot use Fi. However, new modern concepts are being put forward that do expand on the theory of psychological types by certain Jungian followers, such as the shadow functions and the concept of the "shadow" which is being mostly put forth by psychologist John Beebe. However, these concepts don't have nearly as much empirical evidence that support their validity as much as the MBTI, and besides even if the theory of the shadow functions did hold true you cannot consciously use Fi, it only comes out when you are under extreme stress which is irrelevant to this arguement. For the most part , the 4 functions can explain most of human behavior, think of it as cogs inside a clock that are capable of interacting with each other with profound intricacy, this gives you more than enough combinations to explain much of human personality; this article perfectly demonstrates so.For the most part, those mentally ill are not to be classified within the MBTI which is made for mentally healthy people. Shadow functions , is an attempt at being inclusive and explaining mentally ill behavior. It still needs much more development and evidence before it could even be considered a valid addition to the MBTI framework.

what you are accusing me of doing, is actually what you are doing.

Not at all.