Blood To call it a certain genre it needs to be written in the actual writing of their review not just a tag that says Genre XXXX Those are never reliable and that s why we don t use AllMusic unless it s written in the review above their track listing I would also advise you to please stop trying to find sources for alternative metal as I m pretty sure no sources fit these described criteria for Blood If no reviewers call it alternative metal reliably then Wikipedia can t either The source you gave for the genres however does support metalcore with the quote you gave Per WP RS anything likely to be challenged or challenged already must be backed up and alternative metal has been challenged for accuracy Some of us me definitely among them don t for a second believe Blood is alternative metal So basically we can use our opinions to remove uncited material but not the reverse Hope I clarified things talk to me