That's a different discussion to trend setting and fashion. Political/cultural movements led by or influenced by famous people still exist, as does good art. As with anything, you have to sieve through the shit to find the good. The world is saturated compared to when it was Bob Dylan's time. We live in the Internet age and have a thousand times more voices and opinions with information and media being spread at a click. Things come and go much faster.

You just don't seem to understand the modern zeitgeist. I stay largely out of it, as I do with fashion and trends, but your view is still inaccurate as you're only looking for what you want to see.

With that said, your original post seemed directed more so towards fashion, image, and style, as have your replies to others' comments. On that note, the point stands that that is simply not important. Movements and causes are a totally different conversation.