Argh! I just typed out a massively long answer the last few posts and then the hamsters ate it! Okay, truncated version as I don’t want to have to completely repeat what I just said:
Cosmic Relief, the essay I linked to made it clear the reasons for putting limits on behaviour. You seem to have interpreted “I am my own God” as “I obey no authority, I will do whatever I please” and I’ve said why that’s not the case. If you want to disagree with the terminology by all means do so but the concept is entirely rational.
WhyNot, I never said I didn’t believe in magic, just that I’ve not experienced it so can’t give you my own take on it. Magic is very central to Satanism, but it’s not given a supernatural explanation, rather it is described as supernormal (i.e. not obvious but still explainable). There is only one brand of Satanist - the rest just use the name.
Which leads me to:
FriarTed, Satanism and multi-denominational Christianity aren’t comparable in terms of claiming authenticity. Christianity has no clear founder (Jesus? Paul? Peter?), no one scripture (the bible being comprised of a variety of different writings by different people at different times, and depending on which version you’re reading may not even be the same i.e. the Catholic bible, Orthodox bible, King James bible) and consequently no-one can legitimately claim to be a true Christian - the term doesn’t really have a clear meaning.
Satanism was founded by one person in living memory and is based (on the whole) on one book written by one person that is entirely consistent and non-esoteric. Before that there was no religion called Satanism, there was merely Christian heresy and inverted Christianity where God was replaced by the devil. This website covers this nicely.
What Satanism means is clear and was set out by LeVay; because people have since attempted to come up with their own versions of Satanism and claim that its legitimate doesn’t make it so. Similarly, what makes you a Satanist is following the principles of the Satanic Bible - doing something different and claiming it’s Satanism doesn’t make it so. Had someone come before LeVay and created a religion called Satanism based on worshipping the Devil, sacrificing animals, or anything else for that matter, then you’d have a point. But they didn’t.
In terms of criminals not being Satanists, they’re not; they’re not taking responsibility for their actions. I made clear why that was the case in my reply to Autolycus why the COS and the religion shuns criminals (whether they’ve been caught or not). Again, the essay by Gilmore that I linked to above elaborates on this point.