I appreciate your willingness to engage in a good faith dialogue, sincerely.

What I said was that sperm is not needed in order to reproduce, but that you needed a fertilized egg and a uterus to grow it in. And it isn't currently needed in a ton of species and is very close to becoming a reality for humans. The research in the UK was primarily focused on creation of non-viable embryos which could be culled for stem cells which would allow for regeneration of specified cells for healing damaged tissues, regrowing tissues, treatment of ALS, Parkinson's, cancer, etc.

The focus of a 10 year Israeli study veers towards reproduction without both sperm and an egg to address all of the goals of the UK study as well as to eventually assist with the declining human population. They literally grow tiny artificial testicles in microchips which then produce sperm. They've been working on growing embryos in petri dishes and the mouse embryos have hearts and tails, they are mice. They are working on growing the synthetic embryos outside of a uterus in and artificial womb. It sounds scary, but so does one Professors recent propositions to start using brain dead women as incubators labeled whole body gestational donation. I would personally prefer matrix babies to my corpse being used as a greenhouse for humans, but I think it's also worthwhile looking into why fewer women want kids.

Your article on trans women in sports (btw there is a corrected version which outlines additional background to clarify potential conflicts of interest) outlines what the authors believe performance should look like based on testosterone suppression during transition. The article I linked was the results of actual outcomes of women's sports competitions including trans competitors and the actual outcomes demonstrate that the predicted outcomes and assumptions (word used by the authors) were not accurate to real world results.

So while hormones indicate that trans women should have an advantage, they don't perform as anticipated. Assuming someone is going to be good at a physical activity based on their physical appearance is a misnomer that also impacts cisgender athletes. Im old as shit, but Muggsy Bogues would be an armrest for me and he was an amazing ball handler. There are other factors than hormones and physique. So good news, your concerns about women getting obliterated by trans women in sports on the whole are unfounded. The original article I linked outlined several instances where trans women underperformed in comparison to women even in sports which are considered to be male dominated like weightlifting.

I think you truly believe that you are doing women a service by defending women only spaces, but I also think you are underestimating what women as a whole are capable of, and what spaces need defending. We do need men who are willing to step in and be a voice in defense of women (all women) especially in conversation with other men, but we don't need to be defended in sports from trans women. What we really need is more people in general to start raising their boys to be and do better when it comes to their treatment and perception of women. The greatest harm to women, including trans women, are the boxes we are continually expected to squeeze into by others.

I urge you to do some more research on the negative impacts of trans exclusion on both trans and cisgender kids and adults. I am happy to provide some insights based on research, but also maybe consider learning about the lived experiences of trans people in your community.