Before everyone gets too worked up, the invite and response were written by the same person. Most of the response has looping Y's, but the one at the end of Baldwin, NY matches perfectly with the one in the sideways You on the front. Apparently they got distracted thinking about how much further they could go and forgot to loop it. Keep comparing letters and you'll see how they all seem to be similar. Some people just like to stir the pot. Don't fall for it.
More information about text formats