Welcome back to the new NEFF. Take a break from Twitter and Facebook. You don't go to Dicks for your fly fishing gear, you go to your local fly fishing store. Enjoy!
This was addressed in an episode of River Monsters, which is where the author probably got his information. Wade was catching these things in Papua New Guinea I think, where they are an invasive species. He was investigating cases of genital mutilation. Very dramatic. Not anywhere as good as the Goonch episode.
For all you wanna' be carp fishermen, this guy caught 892 carp in Hughes Lake last year. Looks like plenty of fly casting room on the NW section of the lake, sort of looks like those UK lawn fishing deals.