Lesschumras – there is no such metzityus as “Rabbi” nowadays, except one who teaches Torah. Boteach is the antithesis of Torah and doesn’t deserve the title. He makes a chilul Hashem on TV on a regular basis. Do you call reform and conservative “rabbis”, “rabbi”? I should hope not.
A basic principle of the Torah is to do what the Torah says regardless of consequences (barring places where the Torah specifically says to mind the consequences). The world is in Hashem’s hands, and we do what he says without selling out and using the ends to justify our means, even if the ends are just and will help out many Jews. They say the road to Hell is paved with good intentions. Boteach is a sell out. He sold out to fame, money, and recognition. This is the opposite of the Torah’s instruction, and even if his ends are good and even if he has pure intentions it doesn’t make it any better.