So people change name to stay anon , get lost in the crowd a bit . Especially if it's something sensitive. It might be a case that person is recognised. It does not mean it should used against the poster or pointed out.
Also when there is abuse, domestic violence, mental health issues . It is never ever the victims fault or them supporting the victim. People should never victim blame. It is the person who done the abusing no one else.
Because some have a vendetta that's gone on for years . for no real reason. Does not mean its ok to hunt them down on mn and god knows where else. And use their posts to cause them stress. Also why would people do this at a time this person is vulnerable or having a hard time. Why do some feel the need to do that ?
Many people doing the stalking ,doxing ,judging probably would not even cope. If they were in that situation themselves.
It's been several years surely it's time to leave it. You have no true reason for it.