Both in the general community and the JW community, there is more emphasis on male homosexuality than there is on female homosexuality. Why that discrepancy exists is not clear. It could be simply a numerical issue, but in the current situation of lingering community discrimination we are unlikely to know the relative percentages of same sex attracted males and females.
Within the JW congregations in which I had some knowledge of what was going on, I can only recall one disfellowshipping in which female/female sex was the issue, but quite a few disfellowshippings in which male/male sexual activity was the issue.
It is, of course, easier for a woman to hide her unexpressed same sex yearnings than it is for a man. A man who is same sex attracted and married to a woman (which I'm guessing is likely to be the situation for most same sex attracted male Jws. ) has a huge problem. He is expected to perform marriage dues with his wife, while not being sexually attracted to her, and somehow provide an explanation for his lack of performance.
In that situation something is going to give, both in the marriage and in his personal satisfaction with life. That may have something to do with the higher numbers of males who are disfellowshipped, compared to women.