I'll gladly concede that moderation isn't perfect, we sometimes allow our biases to affect us too much, and we also get somewhat jaded by dealing with some of the worst offenders. The problem here is that this user is outright lying about what has happened to him.
Whether you like ds7 or not, he actually has probably had some instances of subpar moderation. This guy hasn't; he specifically claims that we don't allow him to post pro-life things on the board, and his one penalty before that happened was about climate change, not abortion. And the penalty had to do with the insults, not the views espoused.