I hadn't spent much time on his site until I saw your post. I thought there was a fair selection of blog topics. Rangers seemed to make up around 25% of his recent posts and many of those were just factual reporting (Barton up before the beaks, Warburton accepting a one-match ban, etc.). I can see that he's anti-Rangers but, based on volume, I wouldn't have said he was 'obsessing'.
And I don't think us diddies will ever stop reminding you that your old club died. We don't need any blogs for that.