Fe and Te are parallel rational judging functions and evidently equally respectable and potent. And you reportedly don't have much Fe yourself, so... yeah, the irony was quite thick...
This lack of Fe (or F in general) doesn't make your insights in the useful employment of Te any less true or helpful of course. Please, tell more about the mature use of Te, I'd really like to know how to recognize mature vs. immature use of Te in my attempts to develop it further.
But while we ENFPs, including Amargith, have a fair chance to develop better use of tertiary Te (under mature, well-skilled Ne-Fi supervision obviously), I doubt INTJs have much chance with Fe before the six functions above your Fe have been duely developed and integrated. (You'll be great at Fe when you're 80, AO!)
Developing your Fi on the other hand would be likely to yield great results in your life, being right there in your third slot of cognitive tools available. Get a bit familiar with it, and slowly you'll see how it can sometimes support Ni-Te agendas with refining your communication, feel new satisfaction in your actions and support a deep sense of what's valuable and what's delusional to be involved in. Or perhaps you're still too young for this process to be pressingly necessary. You are quite young, right AO?
(BTW, do we have here one more case of an INTJ asking questions he already knows the answer to? Just for the noble purpose of progression of insights through conversation of course, I'm aware of that. And appreciate it too, believe it or not!)