Precisely.
The biggest thing, imo, is the bolded.
In what's known as the
Linguistic Turn in 20th Century Philosophy, this issue became known as the "sliding signifier". It means that that signifier -- i.e., the word -- can mean different things, and, more generally, that in any statement/argument, there is
always a sliding signifier. As applied to this situation, INTP would argue, "No, INTJs don't get to the core issues, INTPs do because yada yada yada", and, in the end, if you dissected this thought, you'd discover that all INTP is doing is defining "core issues" as "the way in which INTPs think about things", and, as such, his whole argument is tautological. Same would go for an INTJ, if he was likewise dumb enough to argue that, "No, INTPs don't get to the core issues, INTJs do." (Frankly, though, I don't think any INTJs have or would have argued that in this thread.) The more important thing, that
actually gets to the core issue of this matter, is to develop an accurate understanding of how each type looks at things: what does "getting to the core issues" mean for an INTP, and what does it mean for an INTJ? In what ways are they similar and different from one another? In what contexts does one work better than the other, and in what contexts does the other work better than the other? And what does it mean to "work better" in these contexts? What does each of them offer that the other does not? How can they work together to more effectively achieve their goals? What are their goals? How do each of their goals fit into a larger picture? All of these, and there are certainly more, are relevant
questions that get to the core of this issue.