I can see how the journey of a degradation fetish leads to poop station, but feet have always seemed like a weird tangent, like ears. I can't think of what connotation feet have that could work someone up.
OK. It does not affect my opinion of him in anyway, so I guess I don't care. It's a completely harmless thing to find attractive. I'm more bothered that Kate would bring it up because he did look uncomfortable with her saying that.
All in all I find the obsession with celeberties kind of creepy. As long as they arent doing something evil why should I care what fetishes they have in their personal lives?