No, I'm not saying all the sages, Ganondorf, the races, and Zelda don't count. They do count, but PLAYING as Link makes the game. What would Zelda be if there wasn't a Small Hero Clad in Green?
About the slut comment, it's just like saying there is nothing you can do with her. What would you be able to do as Zelda? Breed Cows? Pick out an outfit? I can't think of anything to do, unless Zelda was posessed, and went out of control, wreaking havoc across Hyrule, still wouldn't be any good.
The only way I think that would work out, is if Zelda and Link joined in a co-op effort, like the final boss fight in WW. No use being Zelda, but rather have you follow you around, that would be interesting, but also annoying, it's like when you have to carry Ruto in
OoT, and Medli and Makar in WW, it gets annoying.