No, it’s not a polite note. It shouldn’t be a polite note. Recently, comic author Matt Fraction was sent a little thank you on Tumblr from user thetadoctor that was uplifting and rage-inducing all at once. She told him that his positive responses to her cosplaying as Hawkeye had meant a lot because she was often made fun of for her weight when in costume. Matt Fraction responded by giving her a letter to thrust in the faces of those who decide that a fan celebrating at a convention (or anywhere else) is cause for derision.
You’re my hero, Matt Fraction. And we hope that thetadoctor keeps doing her thing because she rocks that cosplaying gig to the max.