Researching egypt, Babylon etc does NOT tell us anything about satanic ritual abuse. Again please state your particular sources.
It seems you're grasping at straws. Channeling and summoning are very similar, both involve calling forth devils.
Crowley gathered his "knowledge" from all over the world, not just the east. He mostly was involved in Gnosticism, which is the reversal of the bible. The only views he took from the East are Meditation and I Ching divination.
Samuel Liddell McGregor Mathers translated and published the keys of Solomon, not Crowley. Mathers was Crowleys "mentor" in the beginning of his works.
Crowley would try anything to summon devils. He used the text of Abramelin the Mage to do the same. After all that he claimed transgression was the best technique. Austin Osmond Spare, and Kenneth Grant used the same transgression technique.
Wrong. Crowley used sex magic to get devils to do his bidding. His technique was focusing his will on his desired goal at the point of climax, then the energies (entities) would fulfill his wishes.
I'm not claiming Crowley didn't do ritual sacrifices because he did. His stated goal was to make the occult a genuine science. This involved repeated experiments to find the best ways to bring his will to fruition. Crowley stated himself he didn't place any faith in rituals and wanted to boil it all down and remove the pagan veneer. He claimed transgression was the best. He learned this from what he called "the holy kabbala" where people like Sabbatai Svi (judaisms false messiah from 1666), Nathan of Gaza, and Jacob Frank, practised the same things.