Something that is not clearly good or evil, there are reasons both for and against it.
Dude what Sylvanas did at the world tree was totally morally grey.
When Blizzard says morally grey they mean that they wanna make you intrigued with the story and later lowkick you with a reveal that's just a cop out.
Sylvanas is morally grey, it's not that simple, just wait and see. She burns down the tree because a random Night elf made her sad.
When Blizzard says Morally Grey they just wanna get you intrigued in the story and to later lowkick you with a cop out that's just not even grey...
Sylvanas is morally grey, it's not that simple, just wait and see. 9 Months later she burns down the tree because a random Night elf made her tell her backstory.
Morally grey is not what Sylvanas Windrunner is doing.
Killing a bunch of night elves becasuse you are pissed is NOT morally grey.