He has a point though, Plushenko's behavior is beyond embarrassing.
Chan was talking specifically about JOHNNY WEIR, not Plushenko. Mr. Prissy complained that Johnny should not have had flowers on his head (they were put there by a fan) because it wasn't "proper".
Where does he get off prescribing etiquette for other skaters?
It's one thing to critique competitors' skating (and even then, it is NOT good form to do that publicly, in the media). It's quite another thing to comment about other skaters in such a catty way.
What Chan did was snark about another competitor. That is the worst kind of "manners".