Quite simply stated, yet crowley expresses it riddled with hebrew alphabet puzzles and false syncretism of 10 different gods for what? The only logical answers is he was fucking with everyone or had major blind spots. And for the record i have a lot of respect for crowley. Its not his fault the GD gave him the kabbalah addiction, and its also not his fault that most of the papyri that enlighten these philosophies were not available in languages he read, or at all at the times of his writing. But they are blind spots none the less. He said himself several times "my personal religion is egyptian" ... so why use the satan serpent example with eden etc (of a faith he himself claimed to hate) when Set as the Bata serpent is what is actually relevant to the thelemic teachings(egyptian)? Blindspots.
I do not disagree with anything you have said here, I also do not use the Judaic Christian God names when using Goetia. I'll touch on that a little later here. Crowley was a man of his time, and yeah, he didn't have access to the recent scholarly material we are fortunate to have today, so I think he made the best of what he had at hand.
The Victorian era would have been a difficult time for a free thinker to have been born into, Crowley's life was marred from a young age with the perverted misery of the gospels and its sanctimonious indoctrination, imagine having to deconstruct the oppressive edifice of these mores in those times?
Even when he made headway into making progress with his esoteric interests, he joins an order believing these guys were in contact with the 'secret chiefs', and finds a bunch of ex masons and the same ol shit God he was trying to get away from.
Of course the GD are taught not to see any name of God as culturally specific, but rather a generic name for the creative intelligence behind all things, (if you believe in that kind of thing), still that's the way it was, Agrippa and pseudo masonic rituals, a smattering of eastern mysticism, and all filo faxed into the Kabbalah and other similar practices. Of course the fact that the young Crowley drank to excess, used drugs, gambled and fucked whores didn't help his rep to much either. The stuffy limitations of lesser minds would not hold such a man for long.
I feel the most important contribution the man made was not the prolific amount of writing he produced, or his Kabbalistic rambles, but the fact he created a battery of Gnostic techniques, to empower his ritual workings. He also understood the so called self, was mostly an accretion of social and genetic accidents, that have nothing to do with the essence of the true self.
He was often LHP in the way he lived, and then he would absorb his consciousness into Samadhi as well, I don't think he could ever figure out where he truly stood on this. Even his essay in Magick Without Tears' is not as clear cut as people believe.
Indeed The Bornless Rite is better understood today, and yet I have used it both for HGD work and for Goetic work, often I use the rubric and then simply use an ad-lib evocation to summon a spirit. Despite people going on about the ritual not meaning this or that, or whatever, it has never been a problem for me using it for a variety of reasons. Set is easily called using it for example, in fact as you intimated, its perfect for that purpose really. Then there is a GD ritual that uses part of it to call Thoth. If something works for the purpose I intend it to, then with all due respect to scholars, I don't give a fuck.
Like Crowley, I learned the Kabbala for the reasons of classification, not for any religious purpose (one could just as easily use the eight rated star of Chaos for this purpose), but merely for the practical reasons of ritual construction, most of the more obvious associations are valid-for example Mars Red-Tobacco -Sword, Stimulants, and a number of deities-its handy to have dozens of correspondences in your noggin, its just useful, having said that, I understand that I am older than most people on this board, and when I was a young man, it was pretty much mandatory to learn this stuff.