On a slightly separate issue . . . I think there does seem to be more of a "pressure" (if that's the word) within radical feminism at the moment for feminists to at least move towards "ideal forms" of intimate relationships that fit within the current conceptualisation of oppression and privilege.
Thinking back 20 years ago plus, I knew many feminists who chose relationships only with women as a reflection of their political ideals. They were open in explaining their reasons, but I don't think there was the level of "evangelising" (if that's the word) about political lesbianism that seems to be around now. I think that may be a function of at least some strands of radical feminism becoming more prescriptive about the beliefs and behaviours one must/should adopt to be a radical feminist.
It would seem that the ideal form of sexual relationship in this particular incarnation of radical feminism would be a committed relationship with another woman. It allows both people to enjoy both the physical and emotional pleasure of a relationship without in any way conforming to patriarchal ideals or colluding with patriarchal oppression on a personal level.
There are many people who do choose who they do and don't have sexual relationships with for political reasons. For example, Jewish people may choose only to date/marry other Jewish people. Some Christians do not have sex before marriage and aim to remain with the same sexual partner for life. Others may choose to engage in relationships with people of only the same caste, class or who hold the same political views. In that context, political lesbianism isn't that strange.
It would seem though that for those feminists who for whatever reason don't feel able to have a sexual relationship with a woman, the next best option is celibacy. You have to forgo the sexual pleasure bit, but at least are not colluding with patriarchal oppression in your personal life.
I think there may be some level of acceptance of women being in sexual relationships with men one, for procreative purposes, but also with the "hope" that their views will evolve, that they will leave these relationships either for celibacy or a relationship with a woman.
Lesbians who have not chosen their sexuality for political reasons likewise may become "convinced" that their relationships are a political act and not just the result of emotional attraction or personal preference.
I've seen some radical feminist writing that is very, very critical of bisexual women. I think there were a few comments along this line on another thread here as well. That might seem puzzling at first glance. But, I think the reason for condemnation and exclusion of bisexual women is that they have clearly demonstrated that they can be in sexual relationships with women, but they also value the option of relationships with men. It's as though they have no valid excuse for not rejecting sexual relationships with men, which means they are more "active" in their collusion with patriarchal oppression by having sex with men.
I'm not passing comment on the rightness or wrongness of this view, but rather just tapping out what I think seems to be the emerging view at the moment and checking out with others if I am on the right lines. Thanks!