Well, as an Asian, I do agree that many idols, singers and actors have some look alike features due to their package, make up and plastic surgeries. And sometimes the aesthetic ideal is just to make yourself look dolly as much as you can. But that's the entertainment world and I can see the same problem in most regions of the world.
The skaters that
Skater boy mentioned are not like that. They don't sell fictional characters like idols, they have different costumes and different package (musics, choreography). So I can't see the point of mistaking them together.
I mean, seriously, Yuzuru Hanyu and Daisuke Takahashi, do they even look alike? Takahiko Kozuka and Takahito Mura have totally different packages even though they have just completed in 1 competition. Or Tatsuki Machida and Daisuke Takahashi???