The article is referring says "reveals that the aggressive nature of this jumping worm ... these worms are sold as part of some compost kits."
Now I did not view the Audio because I have not sound and a slow internet connection.
It appears that in parts of the North USA the native worms were killed by the Ice Age. " The scoop on jumping worms in Wisconsin
In 2009, all 51 species in the genus Amynthas were listed in Wisconsin's first "Invasive Species Rule," (Wis. Admin. Code Ch. NR 40). They were classified as a "Prohibited Species" because we knew
enough about their "dark side" to know we didn't want them in the state. This law helps prevent the introduction of unwanted species by making it illegal to
sell, introduce, transport, possess and propagate them in the state.
Unfortunately, some species make it here anyway.
Jumping worms are native to Southeast Asia."
http://dnr.wi.gov/wnrmag/2015/06/worms.htm
"There are two genera of Lumbricid earthworms that are native to North America. The family Lumbricidae includes most of the earthworms familiar to people in North America and Europe, including the red worm Eisenia fetida and the nightcrawler Lumbricus terrestris."
https://www.quora.com/Are-earthworms-native-to-North-America
I hope this information helps so folks will buy the right kind of worms.