Noticed a weird reading trend.

So I noticed a weird trend while browsing another subreddit. I was reading a post on r/suggestmeabook titled something to the effect of books you were too young to read that scarred you, and found a strange trend. A surprising amount of replies mentioned the person reading a Stephen King novel when they were - in most cases - between 10 and 13. So I was wondering, what could have caused this?

I mean probably in most cases it was because of parents not noticing what they were reading at the time, still I thought I'd ask.

Personally I had also experienced my first King novel at 13 (I think it was Desperation). It was due to me reading whatever my mother had gotten from the library at the time.