I have one quibble, though, on a fairly central point. Describing something as a “satanic cult” is not the same as saying that it is “satanist”. There is an important distinction (though whether those who wrote that it was a “satanic cult” intended to make that distinction may be a moot point).

I do not know enough about Spanish to be able to tell whether those articles were saying that it was “satanic” or “satanist”, but in English the distinction is fairly clear. A satanist is one who knowingly and deliberately worships the satan, the devil of Christian theology. “Satanic”, on the other hand, means evil, inspired by the devil. A lot of things done by Christians are truly “satanic” — the Great European Witchhunt, for example, though saying that does not necessarily mean that those who participated in it worshipped the devil. Many of them may have thought they were doing God a service, even when engaged in satanic acts like falsely accusing people of witchcraft and killing them.