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.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.