Your post was dismissive of most of the other conversation that had gone on since your earlier posts and dismissive of perfectly valid responses to your posts on the grounds that they weren't "the original point". If you want to be involved in the discussion and try to bring it in another direction, great. But be prepared for people to say "no, we were talking about something here and while your reasoning appears objective at a glance (going back to the original topic when a thread is derailed is common and respectful to the original poster), it's not your intention."

Was I really nit-picking? I'd say not in your case. I could've ignored you and continued my discussion with others here. I could've humoured you like a child and pretended you had good reason to going back to that point. I chose the third option: call you up on it so we can all understand each other in this discussion.