Why? Australia doesn't seem to have a problem with Trainers not wishing to be interviewed why should we?
We are becoming far too insular and precious. That aside who would want to talk to our presenters anyway when they ask cliche questions, don't know what they are talking about and meanwhile they are taking you away from your job which is looking after your horses?!
Compare our presenters to the OZ on track ones - they can be irreverent, controversial, humouress but above all they know their stuff.