Are they hypocrites?
No, they’re not being hypocritical. It is wrong to advocate for a religion in the public university, because when religious ideas are presented, they have to be presented in a neutral manner, without endorsement. However, atheism is not more a religion than not collecting stamps is a hobby. Therefore we can shove atheism down your throat to our heart’s content, since it is not a religion, but is instead a non-religion, and treats all religions with equal contempt. Besides, all we’re doing when we are creating atheists is supporting science and critical thinking.