Surely one doesn't need to be pressured by third parties to make a judgment call on this situation? You must concede that there is some polarization in the debate over Github's reaction, with positive nods about the company's work environment and promptness, and some consternation over the legal posturing.

Again, Ada is simply saying they cannot continue association with Github. The statement you quoted explicitly states that there were several variables to consider, including their own image as a protector of women's rights (their charter is not to end ALL prejudice, it's specifically aimed at prejudice against women).