Read the article again.
It specifically quotes McCotter. "We cannot unite America if we divide the movement," McCotter warned. "Consequently, the time has come for the Tea party to grow up and the Republican Party to wake up and come together to serve and save this great nation."
If you're comfortable with someone telling you to grow up (assuming you're a Tea Party believer), so be it.
As a Tea Party member, I find his statement to be derogatory, offensive, and out of touch with the reality of the situation. Especially in light of his effort to persuade others to abandon name calling.
He’s admonishing both sides.
Nothing wrong with getting worked up and acting like hobbits.
Nothing wrong with someone to get in the middle and try to calm both sides now, either. McCotter wasn’t picking sides.
Really he’s a very strong intellect, and probably the funniest guy in Congress. He’s not the enemy.