I have two sons in the GVF age group. I asked my 21-year old if any of his crowd like them. He replied "No-everybody hates them. They're just a Walmart version of Led Zeppelin." For the record, he is a fan of neither Walmart or Led Zeppelin. He is somewhat puzzled by the fact that I can't stand GVF, though.
Frankly, I haven't heard many young'uns express an affinity for them. To the contrary, it's mainly old farts like myself, some of whom are so desperate for something new (that sounds like something old) that they will cut them an inordinate amount of slack for their ersatz Zep schtick. To a starving man, a s**t sandwich looks like steak.