The case was about the slander and libel, and inciting harassment. People were calling the families and telling them that were going to piss on their graves, dig up the bodies, etc. Alex Jones basically called the dad of one of the victims removed on air.
Alex Jones featured several guests who were involved in actively harassing the family, eg Wolfgang Howiztzer.
Beyond that, he could have tried to use a first amendment defense, if he had complied with discovery. He lost the case on default, because he was withholding information and not complying with discovery. There were many, many issues where InfoWars representatives were not providing the information that they were legally required to provide. They were given many, many opportunities to correct this, and refused to do so.
Just enough time to move all his real assets into his dads name!