[aaaja]

This is an inaccurate narrative of sex in that it doesn't take into account other sexually reproducing species.

More specifically: not all species have an XY chromosome sex-determination system (see ZW or temperature-based systems), not all species have the same anatomy for sexual reproduction (consider egg-laying species), and other species have different sex hormones (for example insects have a hormonal system unique from mammals).

The biologist perspective of sex is to consider gametes (sex cells) as the basis. Two types, with one type (female) larger than the other (male). All other understanding relevant to the exact mechanism in each species is built upon this.