Comment: Being a Jerk is lauded because its a backlash against strangers deciding they get to police what others say, do, and think.  its a backlash against americanized westerners complaining about cultural appropriation when white people wear a kimono (cultural japanese aren't bothered by this) and similar behaviors.  Its a backlash against being fired and or harassed by those who are so certain they're on the right side of history if you refuse to make use of random nontraditional pronouns (outside of he/she/they and derivatives).  A backlash against people who think dragging someone through the social media wringer over a 50's pinup shirt is an appropriate response.

The professor deserves a reprimand and a healthy "what the fuck were you thinking" conversation  with their peers.  Termination isn't likely to do anything but cost money and instead of a thoughtless act, create an active antagonist to the behaviors the college hopes to instill.