Hmm.
Basically you say, oblivious people are prone to overindulge and can fall from one compulsive behaviour like "porn addiction" to another, like being religious and preachy about it, replacing one devoted behaviour with another.
While replacing one obsession with another is a thing, I would not limit this to people with "lack of knowlege", but rather to the overindulging itself, and that's not something based on knowledge. What is based on knowlege is the ability to blindly follow doctrine, be it religious or political.
I tried to find if there is a correlation between intelligence/education and consumption of adult entertainment. Could not find something conclusive. There are hints that higher education broadens acceptance and people seek a variety of stimulus for their mind. I will even claim that the average intelligence/education of the group that plays adult video games is higher than the general average.
Anyway, to get back on topic, sexuality is just such a basic need, people would be interested in it, no matter their knowlege or lack of knowledge.