I'm gonna offer an opposing perspective.
How many current/new-ish musical acts can any of us name that are genuinely influencing middle school and high school kids to WANT to play bass in a guitar oriented rock band?
How many current musical acts are actively driving young people to seek out the kind of hard rock that we grew up with?
And lastly, how long has Zep been gone? That has been a void for 44 years!
I don't hear anyone hating Black Crowes for pretending to be the Faces. Heck, this forum has made Gods of a Canadian Led Zeppelin wannabe trio.
I just don't get the GVH hate. They're good musicians and they're revitalizing a pretty dead rock scene among an audience that hasn't been interested in heavy guitar rock. If anything we should appreciate that they're helping keep our olde selves relevant.