STOP MAKING PEDANTIC, ESOTERIC, ARGUMENTS ON PUBLIC FORUMS LIKE YOU ARE SO FUCKING CLEVER. YOU ARE NOT.
It's absolutely possible to be a jerk about correcting someone, but a simple dispassionate "I think you meant X instead of Y" can be helpful.
I thought you meant exactly what you said, and I meant exactly what I said, passion and all. Regardless of the community sanctions, I still mean it.