The plaintiffs alleged that before perpetrating the mass shooting, Ramos had a growing fixation with Daniel Defense weapons and accessories. The plaintiffs maintained that the vividly realistic content of the “Call of Duty” video games groomed Ramos to commit the mass killings. But the Activision attorneys denied any causation liability on the company’s part. The alleged defects in the plaintiffs’ argument against Activision are just as incurable as those against Meta, the Activision lawyers further contend in their pleadings. But in rebuttal papers filed Jan. 14, the plaintiffs’ attorneys contended that Activision should remain a defendant.