After Cobain was murdered, I hypothesize that Grohl was approached by by TPTB and made an offer he couldn't refuse. He claims to have written and recorded the first Foo Fighters album on his own. Does anyone buy that shit?
The psyop is that music is a huge part of bread and circuses and they wanted to capture as many sheeple as possible. Dave Grohl was a perfect opportunity to do this.
The late Dave McGowan discusses the media and music industry being manipulated by spooks. Enjoy the bits that are 'enjoyable', but nearly everything in the media has some bit of DS tentacle in it. And other works point out the deception, fraud and absurdity. Kubrick knew some things. Capricorn One shows how big lies can be concealed. “Only the small secrets need to be protected. The big ones are kept secret by public incredulity.” ~ Marshall McLuhan