Xander Beckett's videos don't feature any kind of worship, nudity or sexual activity, so to me that's non sexual even in the context of it essentially being a site dedicated to a fetish, certainly compared to other sites which do feature those things.
I don't know whether Max actually has a foot fetish himself, only that he appeared in one of XB's videos years ago, probably just before Desperate Housewives. He could of course, but I doubt all of the guys who've appeared in those videos through the years did as well as opposed to just doing the videos to make some easy $$$.