The problem is not massage therapists calling themselves massage therapists. The problem is men.
Ah, but the massage therapists should state very clearly that they are massage therapists. And specify that they don't do 'extras'. And be prepared to put up with men who ignore all of that and make requests/comments anyway. Worth a try, eh lads?!
Obviously the therapists just aren't trying hard enough to keep perverts away, it's their own fault. Have we had NAMALT yet?