I spent all day reading about the Night's King on the wiki and still don't know how everyone came to the conclusion that the albino Darth Maul was Night's King.
OT: Much like Schrodinger's Cat, if you haven't read the books, its impossible to tell if a "spoiler" actually is going to be a spoiler or not unless you actually check. Some claims may obviously be fake (Spoiler Alert - GoT is a dream of Tommy Westphall), but if a claim sounds like its true, its going to be impossible to tell if it really is or not, especially because most fake spoilers cling to a style close to that expected of GRRM.
Saying ____ will die should only shock if: a)You never entertained the notion of ___ dying
or b)You believe nobody shares your particular view and outlook of the series.
For a community as large and vocal and ASoIAF and GoT's, b) is pretty unlikely. As for a)... this is the Game of Thrones. You win or you die.