No, typo. Thanks for correcting me.
I disagree. If we look its original musical usage (progressive rock), it, while perhaps innovative initially, is hardly innovating anymore. The majority of modern progressive rocks consists of formulaic, but varied and complex, wankery; yet, it's still labelled "progressive rock." This, I suppose, would define the term "progressive:" it's a stylistic term, not a musicological one. Sure, Demilich revolutionized death metal. Okay, maybe death metal isn't the best term for Opeth (though I could argue it). Fine, whatever you say. But Demilich, revolutionary or not, are still simple death metal. There's nothing "progressive" about their songwriting at all. It has more in common with modern tech-death.