It's disgusting that at a time like this people are making jokes about banning vans. 9 people died and yet people still think it's a good idea to make jokes??!!
Nothing's confirmed but there's a theory that he is part of something called "incel" (men who are "involuntarily celibrate" and feel rejected by women and thus blame women with violence). Very misogynist. Hateful. Scary. Most of the victims were women...