When the Seahawks show real emotion, people call them "fake." Why?

Remember that Richard Sherman interview at the end of last year's NFC Championship Game?

[youtube https://www.youtube.com/watch?v=7PH35C7Fhq0&w=620&h=315]

Even though Sherman was in a physical state roughly equivalent to post-orgasm, the "real" nature of that interview -- one athlete calling out another athlete, a rival -- scared some. It led to a popular…