What do you think of machine head?

I think the blackening is the most overated album of the 21st century not produced by metallica.The riffs were ripped off from dimebag derrell,the solos were ripped off of iron maiden and rob flynn is a horrible vocalist and his lyrics suck here is an example:"i hate you I f*cking hate my father I hate you I hate myself".Those lyrics sound like they were put together by a prepubesent 14 year old boy whos father is obbsessed with getting him into football when he doesnt want to.And also they sold out remember they started of with burn my eyes a highly overated cd but it was at least real metal then they tried to be nu metal with rob flynn doing his best vanilla ice impersanations then the album before the blackening they tried to be metal again and failed with an album that makes trivium look like real metal then the blackening which also ripped off cliff burtons b from master of puppets was machine heads attempt to go down in metal history.They worked for 5 years to prefect that album but all they did was rip off other bands.Why is machine head considered the greatest modern metal bands again?And why is the blackening considered the greatest metal album oif the 21st century when that title clearly belongs to megadeths united abominations?