I agree with that, but there are portions of it where they seem to be intentionally talking about Sabik's. I mean, to use the word 'universal' with the Red God part certainly seems intentional. You don't accidentally phrase it like that. It then starts talking about a couple ways of interpreting it, which seem to be a bit more Raider specific.
But with how much the various PF continually reference the divergent and myriad nature of the Sabik sects, this really isn't one of those that I would ever try to YDIW someone if they wanted a more old-school, church-style cult.