He's going to be pretty disappointed in the future when he finds that, while old people like me have died off, attitudes won't have changed, because our sons and daughters, grandsons and granddaughters have all be raised to believe in, acknowledge and respect objective, scientific reality.
As an example-of-one, my Gen Z, 16 year old granddaughter thinks men dressing up in women's clothes and using women's toilets is both weird and creepy. Her mother has taught her to refer to them as transgender identified males instead of "transwomen" (she even corrects me when I occasionally slip up).