Yes, yes, yes, monistic mysticism vs existentialism. This is a broken record and it's not terribly constructive.
I don't think there would be any "truth" in the mystical state, by the way, since you'd need a duality for semantic truth. That duality accounts for the subject and for the cause of alienation, something I've explained in lots of articles.
This is really a question of subject matter, of the emphasis on what we want to talk about. Even the mystic grants the existence of the dualities as illusions. It's just that the mystic would prefer to talk about something else. You seem to resent the talk about anything other than your personal solution to life's problems. Of course, we're free to agree or to disagree based on our convictions, but this is different from hassling someone for presenting an alternative viewpoint.