If you read the evidence and the GGTF page you'd see Eric Corbett was being disruptive (while not always uncivil) because he did not want the group to have any effective voice against incivility. Many women consider personal attacks AND harassment to be a major issues driving women off the site, once they sign up and start to edit.
Note well: in the matter of Mr. Corbett we are dealing with the issue of CIVILITY not the matter of THE WIKIPEDIA GENDER GAP.