From my perspective: Bullshit.
I am someone who exists outside of evolution's traditional goals. I'm a transwoman, and predominantly lesbian at that. In all honesty, I'm so far outside the norm (even for a transwoman) that it causes most people I date not to have a script for it; the usual reaction is for them to become "starry eyed" and metaphorically eat out of my hand.
This is extra bizarre to me, as someone who used to be read as a relatively uninteresting, effeminate male; being passably female in pretty much every sense (including hormonally) should not increase my attractiveness to other women, yet it does. Not a single woman I've dated has expressed any particular interest in me as a fertile partner, and in what biological sense am I, really? While I have banked sperm, my testosterone levels are lower than most cisgender women's - in all likelihood, I am not fertile. There's very little way for a casual observer - even one who has access to my blood to run non-genetic tests on - to recognize that I am transgender.
I'm not just bragging; I straight up don't understand it. It was one of the things that kept me from transitioning for so long - being afraid women would have no interest in me if I did. I have postulated that the unique mix of hormones that I currently have, somehow, smells like perpetual ovulation; and yet if so why am I apparently far more attractive to women than men? Most girls I date seem particularly attached to my smell in a way they weren't before, but the interest I get from men is somehow less than before I transitioned.
I am promiscuous and unwilling to commit; I neither seek nor am particularly attractive to women seeking someone to support them and potentially their children. I regularly date women who have or have previously had male partners (in an ethical way).
Unless my humanity itself, the fact that I am living authentically and being who I truly am is more attractive, more valuable to the women I date, I simply have no explanation for the reactions I get now.
As a result - my own lived experience tells me that humans, and our relationships, are so much more than evolutionary motivations - at least as we understand them.
The testosterone running through my veins was just as real as the estradiol running through them now; the queerness of my life does not in any way diminish my humanity nor that of those who have interacted with me.
If you come at it from a queer perspective, you plainly see that your argument falls apart. Us queers are very sexual people, but by nature of being queer, don't feel compelled to follow any particular script; as a result our interests are very diverse. Some lesbians might prefer childbearing hips; the ones that date me definitely don't! And yet my femininity is nonetheless compelling; I've had girls tell me how nice it was to date someone so feminine (and how hard that was to find).
The women I find the most attractive tend to be KPop stars; east Asian (usually Korean) women in their early 20s (if that), often who are borderline underweight. The woman who I bonded with like nobody else in my life, the one I loved, the one I always thought was beautiful even when she couldn't see it, the one who gave my life meaning, the one who I still sometimes weep about even months after I last saw her was an obese scots woman in her early 30s with a serious disability.
And she was beautiful to me. Even before I transitioned.
Humans are wonderfully, fabulously, beautifully complex creatures. Our culture and social complexity has run far ahead of our genetics in so many ways. If we accept we have gone past our genetically programmed ways to figure out what to eat, consuming endless salt and sugar, causing us cavities and diabetes and unhappiness, why can't we accept that, too, our genetics were never meant for a world with Tinder and plastic surgery or even fast fashion? That our basest instincts do not bring us happiness - unless we examine them from a perspective that we are something greater, that we can be better than that?
The truth is, we can. The truth is, happiness - mediated by oxytocin and dopamine and all of that evolutionary history - DOES exist beyond merely eating and sex. We are programmed for empathy, for cooperation, for belonging. For love. We may desire things that will make us unhappy but we can make a choice.
If you ignore that, whether you are male or female- if you insist that, no, your life is just about having sex with the most attractive partner because evolution demands it - you will wind up like the parent of this entire conversation. You will be sad. Whether you are a 60 year old man or a 35 year old woman, you will realize at some point what you have been doing is refusing to be human, to have real relationships; you have been using sexuality to protect your feelings, and suddenly, it doesn't work any more.
Choose to be human; choose to be more than your selfish genes.