Hell no it isn't, glam metal at its best had a great combo of poppy song structure and unique, interesting visual flair with technically impressive musicianship. It was an extension of David Bowie, the New York Dolls, T. Rex, etc. and their stylings into heavy metal. Metalcore, screamo, etc. bands are pseudo-depressive, pseudo-edgy, unoriginal hacks usually bereft of unique or impressive vocals or guitar work who think they're cool or outside the norm simply because they associate themselves with metal and alt culture, but are ultimately just weak, vapid "metalheads" too pussy for something like, say, Autopsy. I know that I just typed one hell of a run-on sentence there, but I don't really give a flying fuck.