This forum has not "gone to crap." When I first started posting in early 2010, you would be mauled for even thinking about fruit or potatoes. The forum has become a lot more open to the idea of bio-individuality, and is better off for it. The fact that high-carb and low-carb dieters can coexist here is pretty awesome, IMO.
Paleobird was a great poster. I'm pretty sure her leaving had less to do with people eating carbs and more to do with a few threads that devolved into personal attacks and insults from both parties.