To be honest, i think its inaccurate to label slipknot as a "inept attempt at death metal", since so many bands including slipknot dont fall in to just one subgenre of metal, they are more of a product of many subgenres and they do not like to be exclusivley seen as only one, like many metal bands today. I think that back in the 80s and 90s, the lines that divided the varying styles of metal were much more soild and easiliy defined. But with the inevitable evolution of music, those lines have become blured and formed new and hard to label sounds, some people just dont like the change, Different isnt always bad. But i suppose that with the unfamilar there is the inevitable presence of fear that some bands may surpass their favourites in terms of success and ingenuity.