Should religions that use dishonest and unethical proselytizing have their tax exempt status revoked?

I mean, the religions that most often use these unethical tactics like the Mormons, Scientologists, Jehovah’s Nutcases etc, these sbags are so obviously motivated by a desire for gain, right? They’re not trying to spread truth, they’re not trying to improve people’s lives; they’re after profit! So therefore, they should pay tax, right?