Despite the name, LaVeyan Satanism has nothing to do with summoning occult beings as in GP's post. The latter (as with worship of the devil more generally) would instead be comprised under "Diabolism" which is very much a niche pursuit. It's even hard to tell if what looks like Diabolist practice isn't something subtly different, and more like the Voudun practice of summoning some "negative, dark, powerful" archetypal beings who are however quite recognizably different from any "devil". Heck, occasionally even something as basic as worship of the god Cernunnos (a very recognizable archetype of nature and the "male" principle) gets conflated by some with Diabolism.