Maybe those who are a disappointed alt, register some newbie accounts and randomly take other people's names and post on some campaigns, the goal is to destroy the community of others on the forum.
High chances that this intentionally being done just to compromised other members. However, in this scenario newbie to newbie does not make sense unless a newly registered newbie accounts will going to use it to be used to degrade other member especially the high rank users. So, we should be more careful here in our replies who knows that someone will get angry on the post you made and will create an acount for revenge.