Lucifer was the creator of STO/STS paradigm?

[anagogy]

I look at it as more of a metaphorical event in consciousness at the beginning of the octave.

The Luciferian consciousness is the portion of the creator that wants to experience carnality and duality and explore tangibility. This is also akin to partaking of the "fruit of the tree of knowledge of good and evil" (again, metaphors -- Adam and Eve represent the human consciousness matrix). So Lucifer is the "light bringer" in the sense that it is the principle that shatters innocence/ignorance of "pleasures of the flesh". And yes, this does result in the formation of the lower dimensions because those are the realms in which tangibility and separation may be expressed.

The Christ principle or consciousness is the reversal of that -- the return to unity and the godhead and purely idyllic spiritual existence.

So to answer you question: yes, in my opinion the Luciferian portion of the creators consciousness creates the dichotomy between STO/STS. In the same way that perception of "cold" highlights perception of "warmth", exploration of Ego, reflexively highlights the difference between that and its antithesis.