This is so accurate.
I always seemingly get pwned by INTJs because I lack they're ability to attach to a decision or a conclusion and I don't care about being right as much as they do. Instead of continuing to argue with someone who has made up their mind I just shut up and continue the conversation in my head or try and find common ground so we're at least going somewhere interesting.
Apparently INTJs get frustrated with us for the reverse reasons: because we dodge conclusions (and, by proxy in insecure/immature/still-figuring-it-out INTPS, making decisions).
Yeah. As much as I love INTJs, I dislike discussing with them. Mostly because our way, as well as and reason to discuss is very different.
Discussions to an xNTJ, is about hearing people's views and use them as tools for development of their own.
INTPs and ENTPs enjoy discussing for the discussion's own sake. For fun. To me, discussing is a way of playing with ideas - something I do for pure mental satisfaction. I'm not really trying to get something useful out of it.
An INTJ will oppose a statement when it's objectively wrong. To most INTPs, there is no such thing as objective facts. When someone tells an INTP "no, you're wrong because x", that will not make them feel like the person is helping them - but that they're trying to limit them.
Discussing, to me, is like playing. I'm fiddling with an idea. I'm not trying to be correct. I want the person I'm discussing with to be creative and open for ideas, regardless of the idea's practical application(or lack thereof). When the other person tries to tell me that my idea is incorrect, I feel like they're in a way ruining the fun. Like when two children are playing with dolls, and one of them says "no, you can't do that, it's too unrealistic". I don't see why should it matter whether or not it's realistic, reasonable, or "objectively true", all I'm interested in is the mental satisfaction it gives me to work with developing an idea.
What could make INTJ/INTP-discussions troublesome from the INTJs point of view, is that the INTP might oppose the INTJs views with "what if"-statements. As mentioned, in a discussion, INTJs will only use objective facts. They don't say anything unless they know it's true, so when someone opposes something they just said, they might interpret it as "you're ignorant/misinformed" or even "you're lying". Either that, or "I'm not listening to what you're trying to say, I'm just opposing you with unreasonable arguments because I don't want to admit I'm wrong".