"Don't know what that has to do with what I was saying. After Grunge died, the so called rock seen was dying too."
It might have to the younger audiences, but not to the older, more entrenched fans. There's still great commercial appeal by these bands 30-50 years on like Aerosmith, the Stones, and Santana.
If part of the appeal of rock was the rebellion against society and the established power structure, most of that draw seems to have been co-opted by rap.
Simmons may come across as the old man lamenting the loss of the "good ol' days" of rock, but I understand his frustration with the decline of much of the genre into incoherent cacophony.