IMHO, too often in our society we are stuck with an either/or dilemma. Most schools teach the "martial" or they teach the "spiritual". Some teach by example and some by lecture. Very few teach both. Just a very personal politically incorrect observation.
All teachers can only present what they know, their own way. The rest, in both martial and spiritual practice, is up to us.
IMHO, our lack of spirituality is that we rely too much on the teacher and not enough on our own openness and willingness to train.