Oh yeah, I definitely don't disagree with your point, I just felt it was necessary to point out that while she could be an alternate version of a lombax, she could also be a "vanilla" lombax due to established lore.
As far as anyone knows with certainty, all lombaxes from Ratchet's universe could be orange and brown, or they could be any variety of colors.
Hell, as far as we know, Lombaxes could reproduce via spore clouds or something since lombax physiology isn't exactly something they discuss in-depth in the games.
Really the only reason I could imagine anyone getting upset with your original point is that it could be misconstrued that you were defending the original commenter in some way.