I was curious what they meant, too.
I have wondered if there is some mixing of non-stereotypical gender roles and gender identity. Like, if someone who grew up in the 90s and identified as a “tomboy” might consider themselves transmale or transmasculine if they grew up in the 2020s. But I don’t know enough to make any assumptions about this. Also it’s none of my business, really. It probably depends on the individual and how they see themselves.
(I do know JK Rowling has used a similar complaint in her TERFy ranting, which is why I tend to couch such curiosity in careful wording as best I am able.)
My guess is I’d do better if every clock I owned was on 24-hour time. That’s how I did the Celsius switch, every device (except my car, which I haven’t been able to figure out how to change) I set to Celsius.