I think what Zemen is trying to say is that it takes away from the bond between Link and the Player. What if Link has feelings for the princess but the Player does not? What if the Player prefers Link to have romantic interests in another character, or no romantic feelings at all? Forcing a relationship on Link is the same as forcing it on the player, and that's not always welcome.
Seeing hints is better, because it leaves the relationship up for debate, and the relationship debates are just as huge as timeline debates. It's part of what keeps the series going. Ultimately, if the Player sees fit that Link and Zelda share a romantic relationship, then it is so. If they don't, they Link and Zelda do not. Only a few games have had solid ZeLink moments, and after the distaste shown by many at the forced Link x Ilia relationship in TP, it's safe to assume that doing that with Link and Zelda would have a simiar- if not the same- result.
So what is their actual relationship? It's going to vary from game to game. They could be the best of friends like they were in The Minish Cap, or they could show comradery as they did in Twilight Princess. Whether or not the relationship devles into romance is left up to the individual players, and it's more than likely going to stay that way unless the Link/Player bond is broken and Link becomes his own, fully-developed character.