Ultimate level raiding, or something so hard it may as well just be a wipe button, been an requested feature since Coil Savage was a thing. There was a subset of players that demolished that content despite being far too difficult for the average player of the time. (Mind you, iLVLs were still very low.)

Plus, an enormous difficulty spike grabs certain players. Having something to outrageous to conquer is good for the game.

I will NEVER touch Ultimate, but I know players who are thrilled for it and are going to work on it. So it's still new content. (And I will enjoy the streams and vids of other's struggle.)