No, this is fucking retarded now.
So now apparently he just needs to see a fucking ghost to be able to recreate them perfectly as they were in life and know all about them, etc?
AND he let all his other forms whose ghosts had passed on just fuck off into the wilderness with Kahak? Including his default form up until now...
AAAAND we've got retarded commenters whining about death not having impact any more despite the fact that it was inevitable the moment ghosts / souls were introduced as a concept in the manga, and never mind that anyone who passed on cannot be brought back... and of course the dehumanising impact that this death and recreation cycle has upon everyone being plot relevant.
There are actual serious problems here and you lot are collectively whining about a non-problem...
What the hell? Really?
Recalibrate your concept of "death" to souls willingly passing on. If their ghost sticks around then they weren't really dead-dead. There. Problem solved.
Let me spell it out for you again: His mass revival of the dead as revenants is not the problem here. Ghosts being a sufficient stimulus to recreate a living body is the problem here... and letting Kahak's knocker live. That was a big fucking retardo moment there.
The plot here always had a few holes in it, but now they're opening into gaping chasms.