Te-doms concern themselves first and foremost with what Machiavelli would call effective truths. We're looking to get from A-->Z as efficiently as possible. To me, Ti-derived criticism to an idea can sometimes sound irrelevant or worse idea shitting for its own sake. This is frustrating, and enough to make me actively dislike someone. I think being an ENTJ exacerbates this dynamic further because, unlike our ESTJ counterparts, there's usually a bit of a Ni leap o' faith involved with some of our ideas. We see the answer, we know the outcome, and its infuriating to miss the goal because some dipshit couldn't see the big picture. This doesn't make me sad. It makes me angry.
My answer to your first two question: it depends. If someone whose role is necessary to my project gets stuck in a rut over what appears to be mere semantics from my point of view, then the response would be to do what's necessary to get the person back on task, or to replace you. If you are not necessary, my response would be to ignore you. Having said that, we like to get our ideas tested. If someone has a way to get to A-->Z and skip more letters than we could, then we'll totally be down for that. You might have to convince us a little, but if we're arguing we're at least interested. We're curious and like to think work things out externally like the ENTPs do, we're just a little more, uh, "focused". I think what most people would consider confrontation is to me just trying to vet the other person's idea and that person. A person who I trust and respect is going to have to work for it less.
Your best bet when dealing with ENTJs is to couch whatever arguments in terms of added value to outcome. Your idea may be perfectly valid, but if you don't take the time to connect the dots to the bottom line we may dismiss you off-hand. Hold your ground. Have a couple points prepared as to why you think you're correct, and we're wrong. And don't you take it personally if we initially tell you to go fuck yourself anyway. It can still turn out in your favor in one of two ways: 1) we take the information, mull over it for a while, and recognize your point was correct, or 2) in the end you turn out to be right and we were wrong. In either case, I would try to rectify the mistake immediately, and would probably apologize to the person for blowing them off if they hadn't been too insufferable about the whole thing.
Or the TL;DR version--Meet us halfway and we'll work with you. Oh, and no bitch-assness.
(those all-natural liver detox shots seem to work by the way...fyi to like-minded people)
