I have a different take on this because I think it can prevent people from realising how these actions ended up happening and how to stop them. Here in Norway there are people who refuse to name Anders Breivik, who car bombed Oslo and massacred the attendees of a summer camp, many of them children. The argument is that the focus should be on the victims and certainly we never forget them.

But in ignoring the perpetrator we miss an essential part of the story: many of these people were radicalised within our societies and the pathways and narratives involved in that still exist and are largely unchanged. By refusing to acknowledge the perpetrator we are also refusing to acknowledge the factors that led to them committing their acts and refusing to make widespread societal changes to those. I'm not just talking about laws & government actions, but changing the narratives around the causes and being more aware of how people end up being radicalised into action and how we can all try to prevent that, or spot it earlier. By incorrectly labelling these people as aberrations we can ignore the environment these atrocities occur in and become complacent, then shocked when it happens again.

Also consider that whilst they are not named in the mainstream media, they are named and celebrated in media that aligns with their philosophy or grievance. Those most likely to be inspired by their actions are very likely to hear their names and much more.