I think there’s a sense in which one’s systematic theology must be an organic outgrowth of one’s experience and understanding of their life on the one hand, and the Word of God on the other, specifically as that Word speaks into and about their life. You cannot simply cut and paste a whole system of doctrine that has been formulated by someone else, based upon their own interaction with the Word, into your own personal system of theology and philosophy. It just won’t stick unless it has grown up organically.
That is not to say that one cannot learn from another, or that learning systematic theology is a futile practice altogether. Rather, at this point, my sense is that a teacher (in whatever sense of the word) ought to use the elements of their own system of theology to nudge others in the right direction, suggesting paths to pursue and dangers to be avoided. Otherwise, in my experience, you end up with an empty set of propositions and assertions to which one either assents or dissents, but there is no real linkage to the person’s heart - what truly moves and drives them and what will make a real difference in their lives and in the lives of those around them.

Education is the process of making the familiar strange and the strange familiar.