Well, I'll tell you what I find interesting, and a tad upsetting, it's that Te users approach this issue really differently from, I guess, Ti users. The Te user will start talking about what's going on between the people or inside the person, and not talk too much about the actual issue, namely, is there a reasoned answer to the rejection of reason. A hypothesis is posited, namely that one can take whatever position one on whim chooses, and the answer is... nothing?
Pragmatically we can know that the INFJ is merely announcing an ENTP position, thus forcing any ENTPs in the vicinity to start investigating the roots of truth, which will end up being feeling, I guess, and then everyone's back on INFJ turf and the INFJ gets to speak their real piece.
So... I dunno. What is the Ti users' real answer to their own quite common claim that nothing is ultimately true?
(And is the world really that divided into X-users and Y-users, so much so that the X side normally can't provide a satisfactory answer to the Y side, and vice versa?? What a crock!)
(And on the other issue, yeah, I suppose it is quite common for people with two judgment functions as number 2 and 3 to mix up the language, using feeling language to talk argue and argument language to feel. I guess. Or maybe everyone does that too? An INFJ I know once retorted that she wasn't that interested in feeling, it was truth she sought!)