I LOVED Chan's costume. and I hated Abbott's- too clingy in all the wrong places and made him look big. Hanyu's doesn't bother me as much as it bothers others, but I was more bothered by how incredibly skinny he looks.
Although I do agree that tight-fitting costumes makes Yuzu look "incredibly skinny", BUT he's a very skinny person in reality. So even without the tight-fitting costume, he'll still look pretty skinny.
And regarding the comment about Yuzu looking like an adolescent boy, i.e. 14 years old, I think it's genetics - the kid barely has any facial hair (or none at all), a typical characteristic of manhood. I honestly don't think Yuzu will lose his youthful looks anytime soon, but since it's his skating that will be judged, and not physical appearance, Yuzu should be fine. I still consider him a strong contender for the OGM - because I am a huggeeeee fan and also, I think he has all the talent in the world to become a gold medalist.