I think it's exempt from politics because it's a free choice of a private entity.

There are a great many things that, done out of personal choice by private citizens are laudable, but done en masse by a government body are offensive to me.

Want to choose a religion as a private citizen? Great. Want to do the same as a government? NFW.

Want to choose to serve in the military?...

Want to make reproductive choices?...

Want to decide your profession?...

Want to decide whom to marry?...