Stale pastry is hollow succour to a man who is bereft of ostrich. - Sheldon Cooper, The Big Bang Theory
Hysteria among crazy trolls is a positive sign that Yuna is doing just fine with her preparations. She has gotten better every year since coming on to the scenes, along with increase in number of trolls and intensity of their craziness.
Discussion of whether she will win at Worlds is meaningless. IMO, only battle she faces will be whether she can better her last season performances.
You can find out...your favorite skater's RANKING.