I have not seen this user's other memes or anything negative, so I have nothing to consider as trolling. Let's not judge based on a bad choice of username alone. Do you have links to any of123Guy_again's other memes that you can share?
A long time ago, there was a user named Return_of_Love_All, named after a deleted troll. I don't think Return_Of_Love_All ever did or said anything wrong to any user, other than having a notorious name. Maybe someone who has been here a long time can give more perspective on that.