Most of the time it is, but there are exceptions. I was a rock band roadie when I put on the first of the
Repack races. I gave a copy of my
mountain bike book to Bill Champlin, double-Grammy winner and the frontman for the band I served as the roadie. He asked, "Where was I when all this was going on?" I had to tell him, you weren't on the bike rides!
As i pointed out, Bob Weir was a mountain biker. Gary Fisher and I rode with him.
In the '70s I was going out with a girl whose roommate was dating Craig Chaquico, lead guitar for Jefferson Airplane. I helped Craig build a "klunker."
Sean Hopper, keyboards for Huey Lewis and the News, has a Steve Potts bike.
More recently Bono famously crashed his bike in Central park, and took major damage.