How does PIing a poster based upon a select amount of posts differ from a bigot becoming racist based upon a select amount of interactions with an ethnic group?
One is making a judgment on an individual based on the actions of the individual. In your second scenario you are making a judgment on a group of people you've never met based on the actions of individuals. You are assuming that one characteristic makes them all the same.
Also, I would classify your original post as discriminatory language since you clearly can't see the difference.
