He's wrong. The Jockey Club, which governs Thoroughbred breeding in this country, does not permit artificial insemination. The odds of Barbaro being able to live cover mares, which is required of Thoroughbred stallions, are slim. The owners are doing this for altruistic reasons.
You know, I had given up way back, as far as T-bred Barbaro babies. But I had my fantasy wish of a quarter horse or two from him.
Then I read this the other night, linked from TimW's blog - some may need tissues for this:
This one first ...
http://en.wikipedia.org/wiki/Your_Host_%28horse%29
And then this one ...
http://en.wikipedia.org/wiki/Kelso_(horse)
Miracles do happen.