They are just names we chose but yes they can be revealing. I've wondered about the people who are "someonesmom"... there a several. I usually think that's great that you're someones mom but you're also someone else...you. Maybe that's what the chat person was thinking?
I've been here several years and seen threads like this and other threads that recur with newer members. I usually just smile to myself and skip them. Glad I clicked on this.
I agree that you should change your name Useless Me. It's kind of negative reinforcement. Trust me.. you don't need that I don't know that we're all here for a reason but... we are here and we can find reasons. Good ones. You could be kind_me or helpful_me