But a main reason a separate sports division was created for female people was to give us the chance to participate in the first place. The aim was to give us a chance to participate recreationally - for fun, fitness, personal fulfillment, skill-building, health, social benefits, etc - as much as to participate in sports competitively.
Historically, girls and women were either excluded from participating in sports entirely - or we were allowed to participate, but only to a very limited extent compared to boys and men. When girls and women did get a chance to participate, we were restricted only to some sports in some narrow settings and under limited conditions.
A principal aim of creating a separate division of sports for girls and women was to make it possible for the 51% of the human population who happen to be female to get a chance to participate - finally. It wasn't simply about "guaranteeing specific outcomes to different groups prior to any competition" the way your disingenuous, historically uninformed framing suggests.
The longterm aim of female sports is to create and insure an equal playing field for girls and women. But before we could set our sights on that goal, girls and women had to fight tooth and nail over many generations just to get a chance to access the playing field to begin with.
One of the many reasons girls and women's sports still aren't on an equal footing with boys's and men's sports even in 2023 is because for generations, girls and women weren't allowed to get our foot in the door.
It's also disingenuous to to speak about segregation based on sex, race, orientation, etc etc in one breath as though the different characteristics you lumped together are analgous - and as though race/ethnicity and sexual orientation are at issue here.
In sports, it's long been widely-agreed that the appropriate dividing lines for separating particpants and competitors into different categories are sex, age, skill level, physical disability/disability - and in some cases like wrestling and boxing, weight.
AFAIK, no one on this thread - or anywhere else - is seriously advocating that sports be segregated by race/ethnicity/skin color, sexual orientation, religion, poltical views, etc. Though some people are advocating that sports be segregated by gender identity; that new categories be added for some novel gender identities (non-binary, and trans); and that male athletes who claim opposite-sex gender identities be allowed to compete in the female category.
If you want to make the case that there's no legitimate reason to have separate sports divisions based on athletes' sex, then have at it. But if you're serious about persuading others to come around to your view that mixing both sexes together is the fairest, safest and wisest approach, you're going to have to provide some evidence-backed arguments to support your position. Using disingenuous framing and throwing around a bunch of stock phrases, buzzwords and slogans that give lip service to "fairness for all" while actually promoting unfairness for female people won't do the trick.