Almost all are avowedly committed to the ideals of tolerance, pluralism, and diversity in faith; if you were to say that a belief system should be dismissed simply because it is essentially religious in nature in essentially any other context, they would be some of the loudest voices speaking out against you. So why should TESCREAL be any different? Why is it that religion as a whole is fine, but not this religion?
Because a religion passing itself off as scientific is a bad thing? Just spitballin' here.