Given the confusion, maybe the mods would be willing to clarify the sidebar text to make it less ambiguous.

I agree that the sex features are more important in this context, but gender also has this double meaning, according to

• Cambridge Dictionary: “used to refer to the condition of being physically male, female, or intersex (= having a body that has both male and female characteristics)”
• Merriam-Webster, which also has a usage guide for sex/gender (in nonmedical and nontechnical contexts, there is no clear delineation, and the status of the words remains complicated)