If he absolutely insists on discussing it I would recommend asking him to think about gender non conforming ‘proto gay’ children (children who will grow up to be lesbians and gay men if allowed to develop naturally and experience puberty without interference).
A lot of gay men are naturally GNC in childhood, even if they eventually grow up to be ‘non scene’ masculine men who don’t ping anyone’s gaydar.
The gay men who have come out as GC and spoken out against the trans movement are often initially motivated by the thought ‘that could’ve been me if I were born x years later’ because their childhood stories are so similar to high profile transitioned children like Jazz Jennings and Jackie Green.
Children who would otherwise grow up to be gay are having their sexual orientation blocked from developing, little pre gay boys are being made in ‘straight women’ via chemical castration.
Young lesbians are absorbing the idea that it’s better to move through the world with others perceiving you to be a man than it is to be a GNC woman, and butch lesbians, always a marginalised group with little to no celebrity representation, haven’t benefitted at all from the mass Stonewalling of society post same sex marriage.
I think one of the main reasons I have avoided being ostracised for my GC views is because I have a ROGD stepchild - everyone who knows our family can see with their own eyes that it just doesn’t make any sense, and that my DH’s same sex attracted DD has retreated into a fake male identity after relentless bullying for being a ‘lezza’ in high school.
She has also developed a very obvious restrictive eating disorder, so it’s impossible for anyone who knows her to maintain the media promoted fantasy of ‘social transition improves mental health in teenagers’
Homophobia is still real and even a totally accepting family cannot protect a child/teen from the horror of homophobic bullying.
I worked (briefly) for a gay men’s lifestyle magazine in the late 90s and while I think it has gotten better for young gay men in a number of ways, the difficulties of growing up with an emergent same sex attraction are still just as hard, only now you are expected to be out and proud and dressed as a Drag Queen for the school disco, rather than allowed to discover yourself gradually and come out only when it feels right and/or necessary (eg because you want your mum to meet your boyfriend).
My DH’s DD had absorbed so many stories of LGB teens being rejected by their parents that our ‘we don’t mind who you bring home as long as they treat you in a loving and respectful manner’’ was disappointing to her, rather than reassuring. The internet messaging of the late 00s (identity politics/progressive stack/boomer hate) made her expect rejection and when rejection didn’t happen she didn’t know how to process it (coming out a second time, this time as gay man*, did result in some highly anticipated parental pushback!)
The mixed messages of Gay is Great and a school full of rainbow decorations whilst being relentlessly bullied by your peers for coming out is perhaps psychologically worse than growing up gay in a time before schools had LGBT clubs and being a gay teen was a less public experience?
I hope we can find a way to help same sex attracted teens towards self acceptance without forcing them into a new stereotype box (boys in the blue box, girls in the pink box, ‘queers’ in the rainbow box).
A no tolerance policy for bullying would be a great start.
*gay man in newspeak = female GNC teen attracted to other female GNC teens!