I’m not a Wiccan – my spiritual influences come further East. But I think that to say that Wicca is simply and merely a “new, 20th-century religion” ignores many things we know about how Wicca developed. First, it ignores the fact that Crowley and Gardner were both inspired and took ideas and practices from the Dharmic and Yogic paths of India. Insofar as Wicca continues this Dharmic/Yogic thread, Wicca could be looked at as a Western formulation of millennia-old Asian traditions. This is not to say that Wicca is merely or predominately Dharmic/Yogic-based, but the influence is certainly there – even the “Horned God” is not limited to pre-Christian Europe and has analogies in India, in the form of “Pasupati”, Lord of Creatures, one of the many names of Shiva, Mahadeva.
Second, claiming Wicca is merely and simply a modern invention doesn’t do justice to the spiritual experiences and claims of many Wiccans and (Neo)Pagans. For instance, it is common to here Wiccopagans claim that Horus, or Thor, came to them in a dream, or manifested in some other way, indicating that the way of Horus or that the Asatru is in fact a real, living path, and that it is not “dead” by any means, historical records notwithstanding. In some ways, this claim is similar to the claim of Moses meeting the Abraham’s Lord in the desert. Looking at Moses from a perspective that lies outside of the Abrahamic tradition, how could one claim that Moses met Abraham’s Lord? Can Moses’ claim of historical continuity with Abraham be questioned, or re-examined? Maybe the deity Moses met was not the one of Abraham? In other words, by bringing in Moses’ example, I suggest that if Moses is given the benefit of the doubt – if the deity that Moses met is believed to be the deity that Abraham met, even though Moses lived at least 500 years after Abraham – then why not give modern Wiccopagans the benefit of the doubt, when they make similar claims about encountering European, Asian, and African deities during their spiritual experiences?