Every time a baby girl is born, a human being comes into the world who has

1. the potential to become pregnant and give birth

2. a statistical expectation to have weaker body strength than the average man

3. the potential to be abused by men due to a combination of their statistically greater physical strength and sexual desires

4. etc

Feminism concerns the fact that biology produces such human beings on 50% of all births -- production of female children is a pretty important phenomenon.

Feminism is in no way invalidated by a thought experiment whereby some proportion of women lose one or more of those distinguishing attributes. It remains a fact of biology that 50% of births produce female children. Your thought experiment does not describe the real world. You might as well say "what if humans had 3 sexes, then where would feminism be?" or "what if women were stronger than men, then where would feminism be?".

It sounds very much like you, or whoever you got that thought-experiment from, are starting from a premise that

> we do not like the fact that the vast majority of women in the world define "woman" to exclude transwomen, and define "feminism" to be concerned with the traditional definition of "woman"

and then you are trying to think up reasons to invalidate the concept of feminism. That sort of "desired conclusion first, argument second" approach has a history of not being terribly successful at aligning with how reality actually is.

Looking at the status quo as a defense has historically not worked out well. Similar resistance and excuses were said of gay men, lesbian women, minorities (IE dark skinned people in much of the world), slavery or indentured servitude, basic women’s rights, marijuana users, mental health issues like autism, bipolar, borderline, schizophrenia, physical disabilities or deformities, and more.

Most of those instances now have first world societies with a majority of people agreeing those people deserve [near] equality and basic human respect besides. For the instances where a majority has not been reached yet across the first world (racism, religious intolerance, sexism) the trend is getting there.

That’s not how things were before. How is what you are saying any different? For all the above, people had their reasons they believed to their core and were sure the detractors like myself were wrong. As you have noted in the moment, you could use the status quo and human tendency to be conservative (not in the political right/left sense but in the general definition) and having a hard time with change to show society does not want this progress/change.

I understand you believe this time is different. But isn’t that what all the people before believed too?

I never understand this question being used as a gotcha. Yes a sterile woman is a woman. Pregnancy and birth are just examples demonstrating womenhood. There's also lots of other things: XX chromosome, menstruation, bone structure, physical strength, and emotional intelligence just to name a few.

Emotional intelligence? In what way? Are there studies that are able to exclude societal effects that demonstrate these differences?

Physical strength, menstruation, and others can all happen for a transitioned person as well.

Obviously a male -> female trans person cannot menstruate. Are you pointing out that a female -> male trans person can menstruate? Yes, they can, because they are still biologically female. I didn't get your point re. menstruation here.

I mistyped. I meant can get some of the symptoms. I was wrong to write menstruation. I know this isn’t the exact pr or topic but since the overall point is about how the lines are blurred more than “tradition”, intersex people can menstruate and some have almost or every biological female issue. Intersex people are not a part of “traditional” feminism.

To my bigger point I sent to the other commenter, the status quo and how things have historically been for issues like identity, gender, sexuality, end up not being looked upon favorably and first world societies have consistently albeit slowly progressed on them.

I realize I am committing some fallacies by not sticking to the exact comment/topic. However I saw you edited your comment from being aggressive to respectful/kind so I thought I’d go for it.