I'm not really sure deindividuation is the process you are looking for here. Typically, that is when the aggressor has more or less delegated the awareness of t

I'm not really sure deindividuation is the process you are looking for here. Typically, that is when the aggressor has more or less delegated the awareness of the consequences of their actions to another party. In this case, the aggressor is not delegating that awareness to anyone; they are still very much an individual who is choosing to make these actions. This is closer to dehumanization, where the aggressor simply fails to be self-aware that there is a human that they are abusing, due to the impersonal nature of the communication channels being used.