Even earlier than that. I remember back in the day people taking issue with the backstory established about Seven of Nine's parents as established in Dark Frontier, and how that contradicted TNG Canon or whatever.But hasn't that been what the TrekBBS has been since 2001, when Enterprise premiered?
And had Trek BBS existed at the time we'd probably be arguing something in DS9 violated canon as laid down by TNG, or TNG violating TOS Canon. We really are an argumentative bunch when it comes to our perceptions of canon.