Why do foo fighters seem so dull : please explain

Foo fighters , there’s something deeply bland at the core of their energetic generic rock a lack of wit musically, kurt really was nirvanas vital spark. Allot of the bands some people dislike here : pink floyd , stones etc need to be played on quality hifi, most people have rubbish poxy hifi today, that would make most music sound boring, this has to been born in mind, oasis have always been overblown in their own and their fans imagination, pretty dull darker Beatles ripoffs most of the time imo.