Yes, you can name shitty famous people of today. But when I was growing up, I don't think I ever followed a famous person who wasn't approved by a gatekeeper of some kind. Nor did I ever see an interview of them that wasn't presented by a major media company.
But in both absolute and relative terms, the number of genuinely passionate famous people has increased. And the amount of hours people spend watching these people perform and reading their own words has increased. I'm using Jennifer Lawrence as an effect, not a cause. She wears this faux-accessibility because she's competing with less famous, truly accessible people. Earlier celebrities didn't have to appeal to this desire because there was no one flanking them on that dimension.
Look at pictures of the highest grossing actors of 2016 [0]. Even in their facial expressions, they are miles away from John Wayne, Paul Newman, Humphrey Bogart, or Clint Eastwood in the golden age of Cool.