I've been taking a similar action. When the chests begin to expand, and start busting the vest buttons, I'll poke a little fun to see if they can self regulate the pomposity. If that doesn't work, I just ignore that person's posts. Retraining your eye to not seeing a specific User Name is pretty easy after a week of training.
I won't write them off forever, people can change. But as of now, I've all but completely ignored one poster. Life is better already.