Really interesting perspective, and I agree. I should say I'm only 38 so don't remember the 70s, but I've been a record collector and soul, jazz and funk fan for 20 years. I've got a lot of friends who are record collectors too, so I've been listening to a lot of rare stuff from around the world for years and always seek out new music where I can.
Ultimately, the power of music is to move us - as you said in a previous post. While Vulf leaves me cold, I remember the visceral thrill of hearing my first Meters track and how it changed my feelings about music. If Vulf and Joe are moving people in the same way, then all power to them.
And if they moved me like that I'd damn well wear a T-shirt!