IMO, the issue with shadowlands is that it doesnt really work from a gameplay prospective.
It is the afterlife. How can things die there? How can I go to the afterlife and kill things left and right and then they cease to be? In that sense shadowlands is just basically another plane of existence that comes after death and it's not true afterlife, if this makes sense.
It's just weird. Plus, did we all forget where they said that each character in shadowlands is comprised of ALL their AU/MU characters? how stupid is that. For example, garrosh is supposed to be all versions of garrosh combined into one in the afterlife, and yet it's obviously the MU garrosh.
Terrible story writing.