being a fan of the Grateful Dead does not make you a hippie.
Did hippies like the band - Yes. But most deadheads are not hippies. Just watch The Grateful Dead Movie. Most of the folks interviewed would not be considered hippies.
Sure many of us deadheads share similar views on things but the opinions and values are as diverse as any group.
The only 1 thing shared is a love for Jerry, Bob, Mickey, Bill, Phil, Donna (maybe), Keith, Brent, Pigpen, Vince, and Bruce among others.