I agree with this. I think most teachers do not teach the technique partly because they may not know themselves. They are teachers but that doesn't mean that they know everything. There's a lot to martial arts and I realistically don't expect any one teacher to know everything. I also think that the more a person wants to be able to use the techniques for fighting, the more likely that person will know the meaning. If a person is only taking martial arts for exercise then the application of that technique will often be lost. We see this happen with Tai Chi. Teachers who take tai chi for fitness are probably clueless about a lot of the applications found in the form.