Does Mr. Botech think that we should simply give up on people because of their history? Are all sins irreconcilable?
the new testament is the part of the bible that is big on forgiveness. The old testament is the crime and punishment part.
Easy now. The Rabbi is merely highlighting the interesting relationship between the Kabbalah and mainstream Judaism. The mystical teaching are something that have always been a part of Judaism, but somewhat relegated to the fringes and to those who are taking part of extreme studies. Traditionally these teachings have not been offered until the age of 40, when an individual has completed extensive studies in the Torah and the Talmud. The issues involved are very complex but deal with the study of the nature of G-d, the universe, and the supernatural.
Some take Kaballah very seriously, to others it is a strange curiosity, or even outright nonsense. One Rabbi described it as, "it's nonsense, but it's Jewish nonsense, and the study of anything Jewish, even nonsense, is worthwhile." or as another put it, "crap-balah".
What Rabbi Shmuley Boteach seemes peeved about is most likely the fact that it's doubtful Madonna has completed the near life-time of torah religious studies traditionally necessary to tackle such material properly. The Kaballah teachings can be considered dangerous and irresponsible if pursued in the wrong manner. The Rabbi apparently detests the further corruption of Kaballistic teachings into a pop-culture or practical Kaballah that distorts much of the original teachings which have suffered enough under the hands of individuals throughout history who have distorted and taken teachings out of context, and flat out corrupted them.
Oh, and forgiveness of sin is very prominent in Jewish teachings and writings. The process includes prayer, correcting any wrongs, and aspiring never to do the same deed again.