So a few things...
Every kid rebels from his parents. That's how we become adults. I believe God is involved in this process...otherwise you have "a failure to launch" type of situation.
That video is obviously quite old and some of it is obviously an overreaction based on ignorance. However, if I found an altar or a Satanic Bible in my child's room, I'd be concerned. Justifiably so imho.
Some people have faith that's different from my own...Judaism or Islam for example. Other faiths are merely built in juxtaposition to my own IN MY OPINION and an example of that was what you referenced from 1966. I'm not trying to be disrespectful in saying so but I absolutely see that as a "rebellion against the man" and counter-culture mentality.
That has nothing to do with my faith.
You've never opened a Satanic Bible so you don't know what is inside it. I'll get back to that in a second.
Pretty much everything in that video is something that would concern me except the Satanic Bible.
If I told you I was a Christian but I didn't follow the teachings of the Bible or believe in the holy Spirit, and you quite rightfully told me I don't get to call myself a Christian and I told you that I know more about my religion than you do, or Christianity is whatever I want it to be, I imagine you'd be at the very least indignant.
And that's what I have to deal with. In addition to Gen z idiots calling me a gatekeeper and an elitist for not buying into the idea of Satanic denominations and the Satanic community, which is a myth BTW, I have Christians lumping me in with metalheads, rebellious teenagers, and psychopaths who torture animals.
I've read several books and websites authored by Christians about Satanism that are so completely full of shit I wonder if that's where the idea for fake news comes from.
If you want to define your religion, fine. Don't define mine.
The Satanic Bible is a collection of essays, and an explanation of the three basic types of rituals. That's it. And nowhere in the Satanic Bible or the Satanic Rituals is there anything that would show your child how to summon the devil, demons, evil spirits or how to commune with the dead. Or any other nonsense people believe in that I'm not aware of.
Nobody here knows anything about Satanism but ReRe, and near as I can figure, has any inclination to learn from a legitimate source.
/rant