Summary
A U.S. Army veteran, Shamsud-Din Jabbar, killed 15 people and injured dozens in New Orleans by driving a truck into New Year’s revelers, inspired by the Islamic State group.
The FBI is investigating the attack as a terrorist act, finding videos posted by Jabbar expressing support for the Islamic State group and explosive devices in the vehicle and around the city.
Jabbar, a former Afghanistan veteran, was killed by police after opening fire.
Nothing in the article implies it is not a terrorist group. You are overreacting to a perfectly valid use of the word inspired.