The band never used satanic symbolism at the beginning. It was more about the blues influenced rock, and raw energy. They were around 20 years old. Just wanted to play and get famous.
Once they got into the music industry that's when they satanic symbolism started, through Jimmy Page. The music industry execs encourage this kind of stuff but of course they don't tell you the truth. They suck you in and trap you. They trick you into it by saying it's cool and edgy. They have all kinds of weird parties and it may seem harmless but the more deeper you go eventually you can't get it. It's a cult.
They made the records on purpose. The band members might of thought it was funny or cool, and went along with it but the music industry knows exactly what they are doing.
Just follow the PDiddy saga. The music industry normalized a older man hanging out with a underage Justin Bieber, it's seen as cool and fine because they are both celebrities, but the truth is they molested Justin Bieber and trafficked him.
The whole music industry is disgusting and the symbolism is part of their cult.