I think alot of time we fall into the trap of seeing a teachers time on the mat and number of years of experience in the the martial arts ,automatically giving teaching credentials.
Teaching is a separete skill, yeah i agree 100% with that.
On the other hand i would argue that in bujutsu the instructor/sensei isn't a teacher in the western way at all. If we look at the Kanji for shihan 師範 we see both we can translate that as example and model.
So in that learn paradigma the responsibility for the transfer of knowledge is quite heavy on the students site to be a suitable vessel and to give enough effort to learn.
I would also argue another problem in learning bujutsu/budô today is a very poor body awareness overall trough all of the population.