Has anyone grown up with an obsession of their parents' that put strain on and/or caused dysfunction in their childhood/youth? (see details)

I just came across this article by some poor soul whose father took Ayn Rand’s philosophy and ran the family with it. I feel for people who grew up in families where the parents were in cults, were obsessed with new Age, religion, philosophy, etc. and made the mistake of letting it affect or take precedence over how they raise and treat their kids.

Did any of you have such an experience growing up? Or have you known anyone who has? And how did you, or they, turn out despite it all?