I would think the majority of instructors these days have never even flown a taildragger, so it would be MOST unwise of them to try to instruct it!
Any instructor who has been taught this properly and has built up a little experience SHOULD be able to teach it, so i would have thought the ? should run more - how many instructors are competent on taildraggers? Who CAN not and who WILL not, in this case, can be a very different question.
(Some I fly can't be called tailwheel because they have not got a wheel there!)
