That's the point I try to make, people with something against the Church of Satan
(I/E his daughter) and the like are always trying to "discredit" him saying his real name isn't Anton Szandor LaVey, saying he led a totally different lifestyle than he actually did, but who cares!
What's important is what's been written down and helped countless people find something they can believe in that actually isn't rediculous. If his name was Frow Haufstecklemair he'd still be Anton Szandor LaVey, Creator of The Church of Satan
And the simple fact that he did all that, made most of america think he's one of the scariest people to ever live, and set a basic rule of life for an entire group of people makes him everything we think he is anyways, a great man. Gimmick or no gimmick.
A gimmick is a very useful resource. It's false pretenses and hiding your true nature to make other people happy that creates the problem. THERE is your line, drawn strait and clear.