Before embarking on this resolution, I must give credit to Dr. Edward Dutton - the Jolly Heretic - for inspiration for this post.
While the resolution "All Women Are Lesbians" is a phrase that might draw a level of animosity or incredulity, it is like any generalization ... subject to a few exceptions. This might be particularly true of women with gender dysphoria. I have over the years observed that most women share very strong bonds with other women. I have also known a few women who initially formed relationships with men (to the point of marrying and having children with them) but over time formed stronger bonds and relationships with other women.
It is perhaps the limitation of language and our definition of lesbianism which is at error. If it was a question of "homophilia", where two people of the same sex "love" each other, there would be no debate. Lesbianism is equated with "homosexuality", where two people of the same sex are sexually attracted to each other. The entire issue of sexual attraction is fraught with an underlying error ... as it has a large number of visual cues associated with it. Many lesbians who appear very male-like in their dress and demeanour are not always attractive to men. On the other hand, people going through transgender transition and cross-dressing males might appear attractive to "non-homosexual" males. Anyone who caught the reveal scene in "The Crying Game" can attest to this.
Following the same train of thought, women who are attracted to male presenting women are in a border condition. Are they attracted to women, attracted to men or attracted to women who appear as men? It is far simpler to explain these relationships as "homophilia" or just as emotions that two individuals share toward each other with sex and gender being irrelevant.
One of the points that Dutton makes is that women of equatorial regions tend to be less reliant on men. Explained through a selfish gene model, in areas that the investment in a person's offspring is low men tend to seek diversity of partners. Dutton alluded to the San people of Africa (Bushman) having over fifty percent of males going childless. This implies that less than 50 percent of males are covering a disproportionate number of females. Areas, where access to food is year-long, should show a higher amount of polygamous relationships. If food is particularly plentiful in essence the "guys" bugger off leaving the "gals" to fend for themselves. This suggests an opportunity to develop and evolution of higher pair-bonding between women in warmer climates. In contrast in colder climates, the investment that males have to make in their offspring is much higher.
If a male has limited seasons to harvest food necessary to last the entire year, those males who aren't prolificate have a greater opportunity of maintaining their gene pool. Having a single partner is a higher investment but is also a good longterm strategy. Having to provide for a single spouse and family is much easier than for multiples. It is only when groups (like the Mormons) are able to move into areas with a greater capacity to provide food did they start into polygamy. Within this type of family structure, it is evident that the families tend to work the best when the women get along. Anecdotally, some of the new wives also happen to be best friends with the first wives.
It is unsurprising that we are seeing an increase of Lesbianism in our society. Food limitations are low. About 80 years ago, our society was going through a similar cycle. It isn't that what we are experiencing is a bad thing. It is like the tides. Sometimes the tide comes in and sometimes it goes out.