no jim,
it was a statement of fact, i have been earning my living as a singer am still doing it and have got the t shirt, furthermore i wouldnt still be getting bookings if i was as you put it not fit to teach singing "!apart from encouraging", you on the other hand do nothing but talk about it.,when someone questions a statement of yours, you cannot provide any back up.
you are entitled to an opinion in much the same way anybody is, but in my opinion your opinion is of little interest to me. i do however value the opinions of singers i respect on the subject of singing, but i do not respect over inflated wind bags.