Dude, Mikael sounds pretty bad here, it'd be okay if he just blew his throat and this was the last song on the set so the rest sounds brutal... But I know that's not the case
He sounds like he has been smoking 5 packs a day, zero power behind his vocals. Sounds like they need Peter back for their live performances!
He did state in an Opeth interview or something that he was quitting a while back.
Edit: He also mentioned it was helping his cleans for their newest album .
it's what i've been saying for years now, Mike's Death Vox are almost gone. The last Opeth DVD his death vox sounded like shit, he sounded like shit when I saw him in Seattle couple of years ago. I don't see any point in him continuing to do death vox.