> but they're dangerously over-reductive

I never used to understand this position, until I saw right wing snowflakes getting triggered over a woman looking too manly at the Olympics. They confidently explained XX and XY to whomever would read their little meltdowns, and even rode back on their usual line that genitals determine gender - suddenly they care about hormone levels.

So I'm having to come around to the idea that over-reductive can be a real thing. Although I'm not sure that the sort of dumdum that dive off the deep end with these things would do any better.