If you consider that:
1) fewer young males stay in the organization, leaving at 18, sometimes not even baptized
2) the WTS still persists in sending out mostly female jws out during the day to convert just women
3) little "witnessing" is done in the evening or weekend afternoons, when men are more likely to be home
4) there is a large number of male jws that have stepped down as MS and elders with no desire to "reach out" again due to their treatment
5) there is a large number of male jws that do not want to "reach out" in the first place to be MS or elders
6) older elders are dying or or too incapicitated to do any real work
7) few men actually spend any time in the door to door rather running around dropping people off and picking them up.