I don't think the community taken as a whole was as unified as you think. Some embraced the OGL, some completely ignored it. There are many ways to play 3E, which often flatly contradict one another. People didn't argue like they do now, and mostly just ignored each other though, because possession of the game wasn't in question. No matter their differences, people could feel they "possessed" and were a part of D&D. That isn't so clear anymore, and its what people fight about.
Among all forums I frequent, ENWorld is kind of unique in maintaining this divide. Other forums seem to have as a whole taken one side or the other in terms of the 4E change. There's still argument, but there is a noticable prevailing opinion. RPGnet and WotC strongly skew towards 4E, while Paizo is firmly 3E. This place has always seemed like it was split right down the middle.