Source for this claim? (mods: went back 3 months, have had 0 interaction with them. account is used regularly to harass people in ways similar to this, short a

Source for this claim? (mods: went back 3 months, have had 0 interaction with them. account is used regularly to harass people in ways similar to this, short and restrained so it doesn't sound undeserved, yet, people express similar bafflement to me)