Isn't it basically to become Shiva who is a form of Brahman?
... No...
Okay, first off, I only talked about Shiva as it's what i personally do. All LHP (or what you would call "eastern" LHP) isn't exclusive to Shaivism.
Second, in Shaivism Shiva is *not* a form of Brahman but is considered it in totality.
I've read the thread and as far as I can tell the so called "Eastern LHP" is nothing more than RHP methods and goals cloaked in dark imagery. I don't find the term itself credible.
I personally can't really agree with this as The Hindus and Buddhists ect have been using LHP for centuries before anything occult.
Also in my opinion it's not really Right Hand due to all the Heterodoxy and taboo involved even if there is a perceived "union" by some (the Spanda view is that you simply become aware of your nature and then your will and personality is infinitely multiplied). It's not really right hand path to eat out of human skulls and meditate in dead people's ashes and walk around naked like the Aghori. Or to be involved in sex magick like in the LHP sects of Vajrayana and nibble on flesh of corpses before cremating them. Or raising up power by invoking deities by imitating them in the way that the Hindu and Buddhist ect LHP does. Actually method wise there are more similarities than differences between western and eastern if one is actually involved with meditation and magic and is involved in the taboo and heterodox practices of it.
Unfortunately I feel that some people have clouded a clear understanding of so called "eastern" Left Hand Path by virtue of their own mission to make their idea of the Left Hand Path seem like the only "true" Left Hand Path. Really it's the same crap that's ****ed up Satanism for so long. Religion is pretty subjective. People are going to disagree. There isn't any one "true path" of anything.