I'm inclined to agree (except that they should have said misunderestimated). I mean, I'm not sure I'd appreciate sharing a swimming pool with over 60 kids regardless of their skin color. In fact, I'm not sure I've ever been swimming in a pool with 60 people in it, except during the heat wave in Toronto when they kept the public pools open all night for free to help cool people down. And that was just gross. Shoulder to shoulder, bandaids floating by, god only knows how many "accidents", water turning slowly more and more opaque with discarded skin and hair...
If it was 10 kids, or 20 kids, I'd be saying "those damnable racists!" right along with everybody else. But 60 kids, well, I can kind of see their point, if it's just an ordinary sized pool. On the other hand, the comments quoted were pretty outrageous.