He's not viewing it in a wider cultural context, he's sexualizing children, and so are you. Parents dancing with their children is not in the same context as dancing with a romantic partner.
I read the article all prepared to agree with you. I still kinda do, but I don't think he said anything particularly disagreeable in the article. Either the whole Daddy-daughter dance thing is uniquely American, or I'm just oblivious. Both things are possible.
I take my daughters (5 and 7) out on what could loosely be called lunch dates every chance I get, and if I can somehow take one of them out without the other, it's just one of the most pleasurable things in my life. All of a sudden I have all their attention and they have all mine, and we can really bond. It's kinda organic though, despite the effort being made.
There's nothing wrong with a Daddy-daughter dance, to my mind. Nothing at all. But I probably wouldn't attend one unless my daughters dragged me there, and I wouldn't think of it as a date. Dunno why. I'll have to think about it.
I do dance with them both, particularly my older daughter, which is pretty funny, since I rarely dance otherwise.