It is not for us Spiritual Satanists. It is unethical due to psi-vampirism.
Your basically acting like a psi-vamp. Psi-vampires are people who get involved with this and then over time as they keep doing it might even start to absorb stuff automatically by robbing from people.
We meditate on the environment or the stars or constellations or celestial objects. There is a myriad of places to collect energy. Or we produce the energy by raising it such as Runic work or Mantra work. Or both we raise energies then mantra and then program. You can also absorb energy from Venus, use Runes specific to green/venus energy, and have a one-two punch when it comes to working with energies.
With that said,
Energy Ripping is very good to do with a black magick or grey magick effort. For example you can rip the person's energy that is acting in a negative manner to you or someone you care about. You rip their energy it'll be a pastel color like mixture and then you surround it in a ugly black aura you turn it grey fill it with grey energy, evocation(external). And then as you surround this person with a grimy lifeless dull black aura you pump the grey energy back into them. Just push the ball into them and fill them up and their aura as well since the aura has principles of materializing reality.
Even an unprogrammed grey energy attack should cause issues. Remember you just removed their energy, drained them, and then use their own energies greyed up with grey energy to cause an issue. Even forgetting or not programming an event or doing a simple programming should induce negativity in them at some point in their day.
This is about as far as we go with psi-vampirism effects and even then this is wholly for preparation of performing banefulness on a person. But we don't actively siphon off energies from people consciously or unconsciously, automatically to act in such manner.
In fact you'll come to realize some people already do that automatically as you advance further and it'll annoy you but having a clean, strong aura of protection without any holes in it. And being developed spiritually will allow you to sense such people and do what needs to be done to defend yourself from them. Such people do exist whether they do it consciously or unconsciously.
Think of it sorta like meditation some people sense your slipping away from their level. So they act in a way to drag you down right back to their levels. It's sorta the same, ever noticed after meditating if you pay attention and are in an area with people some act odd to you or for example they get in the way.
This isn't part of psi-vampirism but you'll come to realize psi-vampires can encompass a spectrum of people whether it be a limited casual event such as aforementioned dragging down or actual spiritual vampiric properties of people consciously or unconsciously.
It is UNethical for us Spiritual Satanists and the Gods might look down on such behavior. Not the energy ripping if your performing a baneful effort on someone. But linking yourself and our organization with vampiric activities isn't exactly what we stand for.