Kosis The Revelation - Way too much ehp

I would take a look at this mob as he seems to scale much too high for health and energy shield. I play a decently tanky static strike build and his moves are avoidable but his hp is absolute insane. Not many people will be able to kill him. Lots of people talking on reddit about it taking upward of 30+ minutes to complete. I understand challenge but if the majority cannot phase a delirium map boss it seems kinda lame.